Best Baby Onesies 3 6 Months of 2025

Last updated on 15/10/2025
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1
Simple Joys by Carter's Baby 3-Pack Neutral Sleep and Play Toddler Sleepers, Light Grey Mini Stripes/White Elephant/Giraffe, 3-6 Months (Pack of 3)
Simple Joys by Carter's Baby 3-Pack Neutral Sleep and Play Toddler Sleepers, Light Grey Mini Stripes/White Elephant/Giraffe, 3-6 Months (Pack of 3)
Simple Joys by Carter's
Free Shipping
Why we love it
  • Whimsical designs are adorable.
  • Quality trusted by generations.
  • Easier outfit changes guaranteed.
Main Highlights
  • Full-zip closures promise easier outfit changes in these footless sleep-and-play suits featuring whimsical designs
  • Ankle-to-chin zipper with snap-over tab
  • Fold-over cuffs featured only on sizes preemie and newborn. Product sizes 0-3M, 3-6M, and 6-9M do not feature fold-over cuffs.
  • Trusted Carter's quality, every day low prices, and hassle-free tag less packaging-exclusively for Amazon member
  • Carter’s is the best selling brand in young children’s apparel in the U.S. Trusted by generations of U.S. families for making life easier, Carter’s provides a wide range of styles at a great value.
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9.8
Exceptional
9.8
Exceptional
Simple Joys by Carter's
Simple Joys by Carter's Baby 3-Pack Neutral Sleep and Play Toddler Sleepers, Light Grey Mini Stripes/White Elephant/Giraffe, 3-6 Months (Pack of 3)
Free Shipping
Why we love it
  • Whimsical designs are adorable.
  • Quality trusted by generations.
  • Easier outfit changes guaranteed.
Main Highlights
  • Full-zip closures promise easier outfit changes in these footless sleep-and-play suits featuring whimsical designs
  • Ankle-to-chin zipper with snap-over tab
  • Fold-over cuffs featured only on sizes preemie and newborn. Product sizes 0-3M, 3-6M, and 6-9M do not feature fold-over cuffs.
  • Trusted Carter's quality, every day low prices, and hassle-free tag less packaging-exclusively for Amazon member
  • Carter’s is the best selling brand in young children’s apparel in the U.S. Trusted by generations of U.S. families for making life easier, Carter’s provides a wide range of styles at a great value.
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Value for Money
2
MAMIMAKA Newborn Baby Girls Cotton Onesies Pajamas Baby Grow Footed jumpuit 3-6 Months
MAMIMAKA Newborn Baby Girls Cotton Onesies Pajamas Baby Grow Footed jumpuit 3-6 Months
MAMIMAKA
5% OffFree Shipping
Why we love it
  • Super comfortable and cozy.
  • Easy to put on.
  • Colorful and original design.
Main Highlights
  • Made of 100% Cotton, super comfortable and velvety-soft, smoothly, breathable and cozy, will contribute to a restful night. It is also great for lounging in comfort!
  • Button design makes it very easy to put on and off, long sleeves and footed baby pajamas keep your baby warm and comfortable.
  • Different pattern elements gives your baby a colorful day, make your little one more adorable, these animal pajama will add fun to your baby's bedtime moments, unleashing her imagination with its original design.
  • MAMIMAKA Kids Sleepwear will show off your excellent taste on all gifting occasions and you will see a smile on the face of the lucky recipient.
  • Hand wash recommended, no bleach, line dry, Iron at Low Temperature if Necessary.
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9.7
Exceptional
9.7
Exceptional
MAMIMAKA
MAMIMAKA Newborn Baby Girls Cotton Onesies Pajamas Baby Grow Footed jumpuit 3-6 Months
5% OffFree Shipping
Why we love it
  • Super comfortable and cozy.
  • Easy to put on.
  • Colorful and original design.
Main Highlights
  • Made of 100% Cotton, super comfortable and velvety-soft, smoothly, breathable and cozy, will contribute to a restful night. It is also great for lounging in comfort!
  • Button design makes it very easy to put on and off, long sleeves and footed baby pajamas keep your baby warm and comfortable.
  • Different pattern elements gives your baby a colorful day, make your little one more adorable, these animal pajama will add fun to your baby's bedtime moments, unleashing her imagination with its original design.
  • MAMIMAKA Kids Sleepwear will show off your excellent taste on all gifting occasions and you will see a smile on the face of the lucky recipient.
  • Hand wash recommended, no bleach, line dry, Iron at Low Temperature if Necessary.
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3
VICROAD Baby Hooded Knitted Rompers Newborn Girls Boys Onesies Warm Sweater Jumpsuit Outfits, Blue - Thick, 3-6 Months
VICROAD Baby Hooded Knitted Rompers Newborn Girls Boys Onesies Warm Sweater Jumpsuit Outfits, Blue - Thick, 3-6 Months
VICROAD
Free Shipping
Why we love it
  • Very soft and comfortable.
  • Easy to wear.
  • Cute fuzzy ball ears.
Main Highlights
  • Knitted material is very soft and comfortable to keep your baby warm
  • Front button up closure, easy to wear and take off the sweater
  • Hooded design with two cute fuzzy ball ears
  • Elastic ribbed cuffs to prevent wind from entering the body, stay away from cold
  • Please refer the detail size in product image before purchasing, fit for your baby from 3-24 months
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9.6
Superb
9.6
Superb
VICROAD
VICROAD Baby Hooded Knitted Rompers Newborn Girls Boys Onesies Warm Sweater Jumpsuit Outfits, Blue - Thick, 3-6 Months
Free Shipping
Why we love it
  • Very soft and comfortable.
  • Easy to wear.
  • Cute fuzzy ball ears.
Main Highlights
  • Knitted material is very soft and comfortable to keep your baby warm
  • Front button up closure, easy to wear and take off the sweater
  • Hooded design with two cute fuzzy ball ears
  • Elastic ribbed cuffs to prevent wind from entering the body, stay away from cold
  • Please refer the detail size in product image before purchasing, fit for your baby from 3-24 months
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4
Newborn Baby Girls Onesies Sleepsuit 3 Pack 2-way Zip Footed Pajamas for Play and Sleep,0-3 Months
Newborn Baby Girls Onesies Sleepsuit 3 Pack 2-way Zip Footed Pajamas for Play and Sleep,0-3 Months
MAMIMAKA
6% OffFree Shipping
Why we love it
  • Easy dressing and diaper change.
  • Protects baby's delicate neck.
  • Soft, breathable, and warm fabric.
Main Highlights
  • 2-Way Zip: Makes this jumpsuit easy to put on and take off, dressing and diaper changes easier
  • Collar Details:The zipper at the collar has a blocking design to prevent the zipper from rubbing the baby's delicate skin on the neck
  • Cuff Details:The windproof design of the neck collar and cuffs is more suitable for the baby's body. The fabric is 100% cotton, soft, breathable and elastic, to keep the baby warm
  • Size Selection:Footed style for 0-12 months, footless for 3-24 months,please select according to the size chart
  • Pattern Design:The print is clear and does not fade, with a wide variety of patterns, which are suitable for baby shower party gifts
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9.5
Superb
9.5
Superb
MAMIMAKA
Newborn Baby Girls Onesies Sleepsuit 3 Pack 2-way Zip Footed Pajamas for Play and Sleep,0-3 Months
6% OffFree Shipping
Why we love it
  • Easy dressing and diaper change.
  • Protects baby's delicate neck.
  • Soft, breathable, and warm fabric.
Main Highlights
  • 2-Way Zip: Makes this jumpsuit easy to put on and take off, dressing and diaper changes easier
  • Collar Details:The zipper at the collar has a blocking design to prevent the zipper from rubbing the baby's delicate skin on the neck
  • Cuff Details:The windproof design of the neck collar and cuffs is more suitable for the baby's body. The fabric is 100% cotton, soft, breathable and elastic, to keep the baby warm
  • Size Selection:Footed style for 0-12 months, footless for 3-24 months,please select according to the size chart
  • Pattern Design:The print is clear and does not fade, with a wide variety of patterns, which are suitable for baby shower party gifts
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5
BINIDUCKLING 3 Pack Baby Long Sleeve Side Snap Bodysuit, 100% Cotton Baby Grows - Solid Baby Onesies for Boys Girls 3-6 Months, Green&Beige&Grey
BINIDUCKLING 3 Pack Baby Long Sleeve Side Snap Bodysuit, 100% Cotton Baby Grows - Solid Baby Onesies for Boys Girls 3-6 Months, Green&Beige&Grey
BINIDUCKLING
Free Shipping
Why we love it
  • Soft and thick material.
  • Easy diaper changes.
  • Perfect shower gift.
Main Highlights
  • MATERIAL: BINIDUCKLING baby bodysuit are made of 100% cotton, soft and thick, breathable and comfortable for baby's Sensitive Skin. Suit for winter, summer, autumn, spring.
  • SIDE SNAP DESIGN: Makes This baby onesies easy to put on and take off. With 3 snap bottom closures, It will easier to dressing and diaper change, great for night time diaper changes to not disturb your little one, and not have to pull the clothes over little one's head.
  • 2 Added Snaps Inside: To fix and wrap around baby's tummy, two layers protcet baby keep warm, avoid getting cold. The wrap-around design is actually easier to use. Perfect baby boys and girls grows 3-6 months for sleeping , playing Or everyday wear
  • MULTI-PACK: Set of 3 pack solid color long-sleeve baby bodysuit, easy to paired different baby boy clothes, size from 0-12 months. Baby wardrobe essentials
  • Great Baby GIFT & Easy Care: Perfect baby clothes for baby shower gift , birthday gift, DIY Christmas and Halloween gift; machine washable and not shrink or fade. the high quality cotton will keep its shape and will not stretch over time
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9.5
Superb
9.5
Superb
BINIDUCKLING
BINIDUCKLING 3 Pack Baby Long Sleeve Side Snap Bodysuit, 100% Cotton Baby Grows - Solid Baby Onesies for Boys Girls 3-6 Months, Green&Beige&Grey
Free Shipping
Why we love it
  • Soft and thick material.
  • Easy diaper changes.
  • Perfect shower gift.
Main Highlights
  • MATERIAL: BINIDUCKLING baby bodysuit are made of 100% cotton, soft and thick, breathable and comfortable for baby's Sensitive Skin. Suit for winter, summer, autumn, spring.
  • SIDE SNAP DESIGN: Makes This baby onesies easy to put on and take off. With 3 snap bottom closures, It will easier to dressing and diaper change, great for night time diaper changes to not disturb your little one, and not have to pull the clothes over little one's head.
  • 2 Added Snaps Inside: To fix and wrap around baby's tummy, two layers protcet baby keep warm, avoid getting cold. The wrap-around design is actually easier to use. Perfect baby boys and girls grows 3-6 months for sleeping , playing Or everyday wear
  • MULTI-PACK: Set of 3 pack solid color long-sleeve baby bodysuit, easy to paired different baby boy clothes, size from 0-12 months. Baby wardrobe essentials
  • Great Baby GIFT & Easy Care: Perfect baby clothes for baby shower gift , birthday gift, DIY Christmas and Halloween gift; machine washable and not shrink or fade. the high quality cotton will keep its shape and will not stretch over time
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6
Baby Halloween Costume,Baby Bat Costume,Newborn Halloween Outfit Onesie,Infant Halloweens Clothes Skeleton Costumes,Babies Boy Halloweens Outfit, 3-6 Months
Baby Halloween Costume,Baby Bat Costume,Newborn Halloween Outfit Onesie,Infant Halloweens Clothes Skeleton Costumes,Babies Boy Halloweens Outfit, 3-6 Months
FUTERLY
Free Shipping
Why we love it
  • Soft, breathable, and comfortable fabric.
  • Unique bat wing design.
  • Perfect for special occasions.
Main Highlights
  • Baby Bat Costume Material: The baby Halloween costume is made of high-quality cotton blended fabric, which is soft, breathable and comfortable, skin-friendly and elastic, and infant Halloween costume will not irritate the baby's delicate skin. Newborn Halloween costume are finely made, durable and durable, so that your baby can wear them comfortably all day long.
  • Bat Baby Costume Size: Toddler skeleton costume includes 1 piece * black cape jumpsuit + hat. This newborn Halloween outfit is suitable for babies aged 0-3 Months, 3-6 Months, 6-9 Months, 9-12 Months and 12-18 Months. Please refer to the size chart to choose the right size before ordering. If you have any questions, please contact us.
  • Bat Costume Baby: Novel baby Halloween outfit. Toddler Halloween outfit with special bat wing design with hat. A classic Halloween onesie baby with snap fastenings at the crotch for easy on and off for easy dressing and diaper changing. Perfect baby skeleton costume to save time and effort.
  • Funny Baby Halloween Costumes: Super cute baby Halloween costumes girl. Baby girl Halloween outfit for Halloween parties, cosplay parties, birthday parties, everyday dress up, photo shoots, family reunions or other special occasions, infant Halloween clothes.
  • Baby Bat Halloween Costume: Baby bat costume. Our toddler girl Halloween outfits are as unique as your baby. The perfect baby boy Halloween outfit records the growth and life of the baby. This bat halloween costumes baby is the perfect Halloween gift for your baby.
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9.3
Superb
9.3
Superb
FUTERLY
Baby Halloween Costume,Baby Bat Costume,Newborn Halloween Outfit Onesie,Infant Halloweens Clothes Skeleton Costumes,Babies Boy Halloweens Outfit, 3-6 Months
Free Shipping
Why we love it
  • Soft, breathable, and comfortable fabric.
  • Unique bat wing design.
  • Perfect for special occasions.
Main Highlights
  • Baby Bat Costume Material: The baby Halloween costume is made of high-quality cotton blended fabric, which is soft, breathable and comfortable, skin-friendly and elastic, and infant Halloween costume will not irritate the baby's delicate skin. Newborn Halloween costume are finely made, durable and durable, so that your baby can wear them comfortably all day long.
  • Bat Baby Costume Size: Toddler skeleton costume includes 1 piece * black cape jumpsuit + hat. This newborn Halloween outfit is suitable for babies aged 0-3 Months, 3-6 Months, 6-9 Months, 9-12 Months and 12-18 Months. Please refer to the size chart to choose the right size before ordering. If you have any questions, please contact us.
  • Bat Costume Baby: Novel baby Halloween outfit. Toddler Halloween outfit with special bat wing design with hat. A classic Halloween onesie baby with snap fastenings at the crotch for easy on and off for easy dressing and diaper changing. Perfect baby skeleton costume to save time and effort.
  • Funny Baby Halloween Costumes: Super cute baby Halloween costumes girl. Baby girl Halloween outfit for Halloween parties, cosplay parties, birthday parties, everyday dress up, photo shoots, family reunions or other special occasions, infant Halloween clothes.
  • Baby Bat Halloween Costume: Baby bat costume. Our toddler girl Halloween outfits are as unique as your baby. The perfect baby boy Halloween outfit records the growth and life of the baby. This bat halloween costumes baby is the perfect Halloween gift for your baby.
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7
Lito Angels Baby Girls Jessie Bodysuit Onesie Romper with Headband, Infant Fancy Dress Up Costume Birthday Party Outfits, Age 3-6 Months, Long Sleeve
Lito Angels Baby Girls Jessie Bodysuit Onesie Romper with Headband, Infant Fancy Dress Up Costume Birthday Party Outfits, Age 3-6 Months, Long Sleeve
Lito Angels
Free Shipping
Why we love it
  • Adorable princess cowgirl romper.
  • Comfortable, itch-free cotton fabric.
  • Easy dressing with built-in knickers.
Main Highlights
  • Adorable baby inspired princess bodysuit onesie romper costume dress up for infant or baby girls! Included a lovely tiara crown hairband headband!
  • Cotton bodice with a big snowflake print and short puff sleeves. 2 mesh tulle layers for a puffy skirt look, embellished by glitter snowflakes pattern.
  • Pullover style with envelope neck, built-in knickers underneath with popper fastenings for easy diapering and dressing.
  • This baby bodysuit is made of soft, stretchable and comfortable fabric. Skin friendly, no itchy!
  • Sizes for infant and toddler baby girls, 0-3 months, 3-6 months, 6-9 months, 9-12 months, 12-18 months and 18-24 months. Perfect for baby Halloween costumes, birthday or princess themed party dress up, Christmas, Easter, fancy party outfits or everyday dress wear.
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9.1
Superb
9.1
Superb
Lito Angels
Lito Angels Baby Girls Jessie Bodysuit Onesie Romper with Headband, Infant Fancy Dress Up Costume Birthday Party Outfits, Age 3-6 Months, Long Sleeve
Free Shipping
Why we love it
  • Adorable princess cowgirl romper.
  • Comfortable, itch-free cotton fabric.
  • Easy dressing with built-in knickers.
Main Highlights
  • Adorable baby inspired princess bodysuit onesie romper costume dress up for infant or baby girls! Included a lovely tiara crown hairband headband!
  • Cotton bodice with a big snowflake print and short puff sleeves. 2 mesh tulle layers for a puffy skirt look, embellished by glitter snowflakes pattern.
  • Pullover style with envelope neck, built-in knickers underneath with popper fastenings for easy diapering and dressing.
  • This baby bodysuit is made of soft, stretchable and comfortable fabric. Skin friendly, no itchy!
  • Sizes for infant and toddler baby girls, 0-3 months, 3-6 months, 6-9 months, 9-12 months, 12-18 months and 18-24 months. Perfect for baby Halloween costumes, birthday or princess themed party dress up, Christmas, Easter, fancy party outfits or everyday dress wear.
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8
BRONG Newborn Fleece Sleepsuit Romper Winter Baby Hooded Jumpsuit Onesie Zip Footed Flannel Outfits Pink 3-6 Months
BRONG Newborn Fleece Sleepsuit Romper Winter Baby Hooded Jumpsuit Onesie Zip Footed Flannel Outfits Pink 3-6 Months
BRONG
Free Shipping
Why we love it
  • Soft and comfortable flannel.
  • Easy diaper changing zipper.
  • Cute design with ears.
Main Highlights
  • Material: Baby fleece sleepsuit onesie is made of flannel material, which is soft and comfortable to wear, suitable for spring autumn and winter.
  • Closure Type: Hooded jumpsuit with zipper for easy diaper changing. Also with zipper cover to protect baby's chin.
  • Design: Baby fleece romper with cute ears on the hood. Sleeve cuffs can be folded as gloves. Footed design to keep your baby warm and cozy.
  • Size Information: Toddler hooded hooded romper suitable for 0-12 Months baby boys and girls. Please check the size details before purchase.
  • Occasion: Baby long sleeve jumpsuit also can be a best gift. Can be used as a jumpsuit or as pajamas. Great for party, school, sleep and play, outdoor sports activities, running, casual wear, daily wear, photo shoot, travel, Halloween , Christmas.
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9.1
Superb
9.1
Superb
BRONG
BRONG Newborn Fleece Sleepsuit Romper Winter Baby Hooded Jumpsuit Onesie Zip Footed Flannel Outfits Pink 3-6 Months
Free Shipping
Why we love it
  • Soft and comfortable flannel.
  • Easy diaper changing zipper.
  • Cute design with ears.
Main Highlights
  • Material: Baby fleece sleepsuit onesie is made of flannel material, which is soft and comfortable to wear, suitable for spring autumn and winter.
  • Closure Type: Hooded jumpsuit with zipper for easy diaper changing. Also with zipper cover to protect baby's chin.
  • Design: Baby fleece romper with cute ears on the hood. Sleeve cuffs can be folded as gloves. Footed design to keep your baby warm and cozy.
  • Size Information: Toddler hooded hooded romper suitable for 0-12 Months baby boys and girls. Please check the size details before purchase.
  • Occasion: Baby long sleeve jumpsuit also can be a best gift. Can be used as a jumpsuit or as pajamas. Great for party, school, sleep and play, outdoor sports activities, running, casual wear, daily wear, photo shoot, travel, Halloween , Christmas.
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9
De feuilles Baby Soft Warm Fuzzy Fleece Romper Sleepsuit Pyjamas Onesies Jumpsuit for Girls Boys Striped 3-6 Months
De feuilles Baby Soft Warm Fuzzy Fleece Romper Sleepsuit Pyjamas Onesies Jumpsuit for Girls Boys Striped 3-6 Months
De feuilles
Free Shipping
Why we love it
  • Soft and warm fabric.
  • Adorable and functional design.
  • Perfect for everyday wear.
Main Highlights
  • ♥Composition: Coral velvet (100%Polyester), snug and warm feel ,eliminate irritation on young skin.Tips: the baby clothes tag is designed sewn on the outside to avoid stimulate baby's delicate skin, you can just cut it
  • ♥Style: Onesie Romper for baby,featuring cute pattern and lovey color , buttons closure for easy wear and take off. This soft romper likes a blanket wraps your baby, keep your little one warm and cosy .
  • ♥Occasion: It’s an essential one piece sleepsuit romper for your little ones, suitable for daily casual wear or as sleepsuit .
  • ♥Care Instructions: Wash before first using.Do not bleach,Hand or Machine washable under 30ºwith soft Laundry detergent, recommend wash with similar colors .
  • ♥Tips: Please check the size chart below before order, if you have any questions,please feel free to contact us.
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9.0
Superb
9.0
Superb
De feuilles
De feuilles Baby Soft Warm Fuzzy Fleece Romper Sleepsuit Pyjamas Onesies Jumpsuit for Girls Boys Striped 3-6 Months
Free Shipping
Why we love it
  • Soft and warm fabric.
  • Adorable and functional design.
  • Perfect for everyday wear.
Main Highlights
  • ♥Composition: Coral velvet (100%Polyester), snug and warm feel ,eliminate irritation on young skin.Tips: the baby clothes tag is designed sewn on the outside to avoid stimulate baby's delicate skin, you can just cut it
  • ♥Style: Onesie Romper for baby,featuring cute pattern and lovey color , buttons closure for easy wear and take off. This soft romper likes a blanket wraps your baby, keep your little one warm and cosy .
  • ♥Occasion: It’s an essential one piece sleepsuit romper for your little ones, suitable for daily casual wear or as sleepsuit .
  • ♥Care Instructions: Wash before first using.Do not bleach,Hand or Machine washable under 30ºwith soft Laundry detergent, recommend wash with similar colors .
  • ♥Tips: Please check the size chart below before order, if you have any questions,please feel free to contact us.
Show More
10
Baby Boys Girls Footed Onesies Sleepsuit 2-way Zip Pajamas for Play and Sleep ,3-6 Months
Baby Boys Girls Footed Onesies Sleepsuit 2-way Zip Pajamas for Play and Sleep ,3-6 Months
MAMIMAKA
28% OffFree Shipping
Why we love it
  • 2-way zipper for convenience.
  • Soft, breathable 100% cotton.
  • Adorable, fade-resistant patterns.
Main Highlights
  • 2-Way Zip: Jumpsuit is opened from the neck to the ankle.2-Way Zip,Makes this jumpsuit easy to put on and take off, dressing and diaper changes easier
  • Cuff Details:The windproof design of the neck collar and cuffs is more suitable for the baby's body. The fabric is 100% cotton, soft, breathable and elastic, to keep the baby warm
  • Size Selection:There are 4 sizes with feeted style for 0-12 months
  • Pattern Design:The print is clear and does not fade, with a wide variety of patterns, including cute Christmas elk, penguin, dinosaur, lion, fox, hedgehog and other small animals, as well as daily sweet starfish, small stars, love, leaves, small bow ties, which are suitable for baby shower party gifts
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8.9
Excellent
8.9
Excellent
MAMIMAKA
Baby Boys Girls Footed Onesies Sleepsuit 2-way Zip Pajamas for Play and Sleep ,3-6 Months
28% OffFree Shipping
Why we love it
  • 2-way zipper for convenience.
  • Soft, breathable 100% cotton.
  • Adorable, fade-resistant patterns.
Main Highlights
  • 2-Way Zip: Jumpsuit is opened from the neck to the ankle.2-Way Zip,Makes this jumpsuit easy to put on and take off, dressing and diaper changes easier
  • Cuff Details:The windproof design of the neck collar and cuffs is more suitable for the baby's body. The fabric is 100% cotton, soft, breathable and elastic, to keep the baby warm
  • Size Selection:There are 4 sizes with feeted style for 0-12 months
  • Pattern Design:The print is clear and does not fade, with a wide variety of patterns, including cute Christmas elk, penguin, dinosaur, lion, fox, hedgehog and other small animals, as well as daily sweet starfish, small stars, love, leaves, small bow ties, which are suitable for baby shower party gifts
Show More