Home training --- The spring chest expander is specially strengthen your chest, arms and shoulders.Wonderful chest developer for home trainingErgonomic non-slip handle --- The chest expander has ergonomic non-slip handle, provide comfortable grip. Durable and lightweight, easy to carry.Long-lasting elasticity --- The fitness chest expander is made of high-quality material, with long-lasting elasticity. These enhanced springs provide strength and long-lasting resistance, and will deeply stimulate your muscles when you compress them while using the device.Quiet fitness tool --- The spring tensioner for fitness can provide maximum flexion for the chest, shoulders and arms. Quiet tool, allows you to exercise without disturbing other people, good weight training fitness equipment