Spring pressure: 10 kg, blue, heavy The Bali Impander resistance trainer Original - train against a resistance - With the Bali Impander resistance trainer Original you train your heart, circulation and breathing intensively. At the same time, arms and shoulders are strengthened. The device is not to be compared with muscle-strengthening devices that are mainly used to build up muscles. Bali impanders have a low resistance, which corresponds to the resistance of water when swimming. This fitness training is intended to normalise muscle tone. - Product details: - Handles made of sweat-resistant plastic - Various colours and spring pressure - Particularly stable - Supplied without loops.