Rubber booster Lifefit Rubber Expander Rubber booster LIFEFIT RUBBER EXPANDER is a universal booster intended for strengthening all muscle parts - shoulders, arms, chest, back and inner and outer thighs. Exercising with it is simple and effective. Rubber ropes provide natural resistance during exercise, and light handles provide the necessary comfort. The expander is made of materials resistant to moisture and sweat with increased resistance to damage. The LIFEFIT rubber booster is compact and easy to carry. It is therefore suitable for versatile use at home and on holiday. - rubber booster - 5 pcs removable rubber springs - light ergonomic handles - extra durable rubber ropes - suitable for all-round strengthening of the whole body