The ergonomic design of the hand grip is great for building strength in your fingers, elbows and forearms. The grip is made of PC + TPR with an adjustment spring for greater durability. Non-slip handles are covered with soft and comfortable rubber. Our hand grip has an easily adjustable knob where you can choose the level of resistance, based on your muscle capability. It's lightweight and easy to carry. With the great hand grip, you can start do exercise anywhere.