The life max aerobic kettlebells 2 20 kg are ideal for the novice athlete the weights of these kettlebells increase in steps making them perfect for rehabilitation and kettlebell workouts with seniors our aerobic kettlebell comes with rubber feet to protect the floor on the lmx91 aerobic kettlebells 2 20 kg the weight indication is clearly shown in cheerful bright colour accent key feature of the life maxx aerobic kettlebells ideal for the novice athlete rehabilitation senior workout