We Chose The Best Onnit Primal Kettlebell in The UK - 6/2026

Core Balance 4kg Kettlebell Weight Cast Iron Neoprene Coated Heavy Duty Strength Training (Teal)

Core Balance 4kg Kettlebell Weight Cast Iron Neoprene Coated Heavy Duty Strength Training (Teal)

Core Balance

15% OffLimited time deal

Why we love it

Superior single-piece metal construction.
Protective neoprene for comfort.
Colour-coded for easy identification.

Main Highlights

4KG KETTLEBELL WEIGHT: Looking for a kettlebell that’s perfectly balanced and comfortable to lift, grip, and swing? This 4kg Kettlebell from Core Balance is just the answer. With its cast-iron core and protective neoprene coating, it’s custom-made to help you slay your fitness goals. By combining cardio, strength, and flexibility training, it’s perfect for full body workouts.
HEAVY-DUTY CAST-IRON CORE: Cast-iron kettlebells are stronger than concrete-filled kettlebells and have smaller handles which are easier to grip. Whereas most cast-iron kettlebells have a welded handle, this kettlebell is made from a single piece of metal for superior strength. A powder-coating provides a firm, comfy grip if your hands are sweaty.
PROTECTIVE NEOPRENE COATING: The kettlebell has a soft neoprene coating, so it won’t leave scratches or make a loud noise when placed on the floor. It’s also comfortable to grip if you’re doing exercises that require you to hold it by the bell, such as sit ups to press. Both the neoprene bell and cast-iron handle can be easily wiped clean for hygienic use.
FLAT BOTTOM FOR STABILITY: Doing circuit training? The kettlebell has a flat base to prevent it wobbling and easily pick it up in-between exercises. The flat base also stops it rolling along the floor, so that it’s always within easy reach when you’re working out. Storage is easy because the flat base allows you to stand it upright if you don’t have a kettlebell rack.
COLOUR-CODED & LABELLED: The 4kg kettlebell has a teal-coloured neoprene coating and is clearly labelled with its weight to easily identify it from other kettlebells in the Core Balance range. Kettlebells ranging from 4kg to 10kg are perfect for beginners and cardio workouts, whereas 12kg to 20kg kettlebells are great for building strength and bulking up.

9.4

Superb

9.4

Superb

Core Balance

Core Balance 4kg Kettlebell Weight Cast Iron Neoprene Coated Heavy Duty Strength Training (Teal)

15% OffLimited time deal

Why we love it

Superior single-piece metal construction.
Protective neoprene for comfort.
Colour-coded for easy identification.

Main Highlights

4KG KETTLEBELL WEIGHT: Looking for a kettlebell that’s perfectly balanced and comfortable to lift, grip, and swing? This 4kg Kettlebell from Core Balance is just the answer. With its cast-iron core and protective neoprene coating, it’s custom-made to help you slay your fitness goals. By combining cardio, strength, and flexibility training, it’s perfect for full body workouts.
HEAVY-DUTY CAST-IRON CORE: Cast-iron kettlebells are stronger than concrete-filled kettlebells and have smaller handles which are easier to grip. Whereas most cast-iron kettlebells have a welded handle, this kettlebell is made from a single piece of metal for superior strength. A powder-coating provides a firm, comfy grip if your hands are sweaty.
PROTECTIVE NEOPRENE COATING: The kettlebell has a soft neoprene coating, so it won’t leave scratches or make a loud noise when placed on the floor. It’s also comfortable to grip if you’re doing exercises that require you to hold it by the bell, such as sit ups to press. Both the neoprene bell and cast-iron handle can be easily wiped clean for hygienic use.
FLAT BOTTOM FOR STABILITY: Doing circuit training? The kettlebell has a flat base to prevent it wobbling and easily pick it up in-between exercises. The flat base also stops it rolling along the floor, so that it’s always within easy reach when you’re working out. Storage is easy because the flat base allows you to stand it upright if you don’t have a kettlebell rack.
COLOUR-CODED & LABELLED: The 4kg kettlebell has a teal-coloured neoprene coating and is clearly labelled with its weight to easily identify it from other kettlebells in the Core Balance range. Kettlebells ranging from 4kg to 10kg are perfect for beginners and cardio workouts, whereas 12kg to 20kg kettlebells are great for building strength and bulking up.

Best Onnit Primal Kettlebell of 2026

Trial Over Kettlebell 5 kg | Red | 19 cm Diameter | Ultimate Challenge | Peak Performance for Experienced Athletes

Trial Over Kettlebell 5 kg | Red | 19 cm Diameter | Ultimate Challenge | Peak Performance for Experienced Athletes

BodyTrain Cast Iron Neoprene Coated Kettlebells, 4-40kg Weight Options, Home Fitness Training and Commercial Gym (Two Tier Commercial Kettlebell Stand)

BodyTrain Cast Iron Neoprene Coated Kettlebells, 4-40kg Weight Options, Home Fitness Training and Commercial Gym (Two Tier Commercial Kettlebell Stand)

Phoenix Fitness RY932 Vinyl Kettlebell - Heavy Weight Kettle Bell for Home Gym Workout Equipment Strength Fitness Pilates Weight Training, 8kg, Orange

Phoenix Fitness RY932 Vinyl Kettlebell - Heavy Weight Kettle Bell for Home Gym Workout Equipment Strength Fitness Pilates Weight Training, 8kg, Orange

Core Balance 4kg Kettlebell Weight Cast Iron Neoprene Coated Heavy Duty Strength Training (Teal)

Core Balance 4kg Kettlebell Weight Cast Iron Neoprene Coated Heavy Duty Strength Training (Teal)

PROIRON kettlebell 4kg, Neoprene Coated Cast Iron 4kg Kettle bells, kettle weights for Fitness, Exercise, Workout, Home Gym, Strength Training, Bodybuilding Weight Lifting

PROIRON kettlebell 4kg, Neoprene Coated Cast Iron 4kg Kettle bells, kettle weights for Fitness, Exercise, Workout, Home Gym, Strength Training, Bodybuilding Weight Lifting

NORDFIT Cast Iron Kettlebell 4kg-20kg with Neoprene Coating - Home Gym Strength Training Weight

NORDFIT Cast Iron Kettlebell 4kg-20kg with Neoprene Coating - Home Gym Strength Training Weight

Mirafit Cast Iron Kettlebell - 10kg

Mirafit Cast Iron Kettlebell - 10kg

PROIRON Cast Iron kettlebell Weight for Home Gym Fitness & Weight Training (4KG-24KG)(1 x 4KG)

PROIRON Cast Iron kettlebell Weight for Home Gym Fitness & Weight Training (4KG-24KG)(1 x 4KG)

Mirafit Cast Iron Kettlebell - 4kg

Mirafit Cast Iron Kettlebell - 4kg

NORDFIT Cast Iron Kettlebell 4kg-20kg with Neoprene Coating - Home Gym Strength Training Weight

NORDFIT Cast Iron Kettlebell 4kg-20kg with Neoprene Coating - Home Gym Strength Training Weight

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