Chase one of the most intense workouts for cardio and strength training with the Cortex Vinyl Dipped Cast Iron Kettlebell Set from 4 to 20kg. Stay in shape with kettlebells, a comprehensive full body workout that gets your whole body moving with minimal equipment. For extra protection, they are vinyl dipped to minimise damage to the home & colour coded for easy recognition. Our range of vinyl kettle bells are made from strong cast iron so they are just about indestructible. Achieve a comprehensive and versatile workout with the Cortex Vinyl Kettlebell set from 4 to 20kg.