A rubber band for everyone from Casall, perfect for warming up and stretching. The long rubber band medium offers natural material and resistance of 9-20 kg so you can train strength and flexibility.This product is an effective training tool designed for functional training. It helps users train strength, flexibility, agility, and speed. The rubber bands are particularly good for warm-up, recovery, and stretching. Made from natural material, color variations may occur. The reference resistance for Medium is 9-20 kg and the product may contain traces of latex.