Product Size: 15 * 11 * 2.2 cmColor: all blackMaterial: main body PP plastic + TPR handle plastic film + spring steel springPackage content: 2 * grippers1. Improve your grip strength Get a hand grip booster that hits all the major finger, hand and forearm muscles. Whether you& 39;re undergoing physical therapy, maximizing your profits, managing stress, or exercising proactively to relieve the pain associated with aging, this hand strengthener is your all-in-one solution. Your grip trainer will quickly become your new travel companion, desk zappler or couch clutcher. You can take this portable gripper with you anywhere.2. Portable and Convenient The grip enhancer on your hand exerciser needs to be accessible no matter where you go. A portable forearm grip workout allows you to exercise regardless of life. The compact design of this forearm trainer allows you to slip it in your pocket, purse or gym bag. Exercise at home, at the gym, and even in the car. Physiotherapists recommend grip training for almost everyone. 3. High-quality materials We have developed this grip reinforcement for hand trainers especially for you. Other hand reinforcement devices are made of inferior materials that will break over time. To make sure you don& 39;t get frustrated by broken hand gripper tools, we& 39;ve made this gripper from high quality materials that will pass the stress test. Unlike our competitors who break and don& 39;t even fit properly in your hand, this forearm trainer is built to impress.4. Adjustable resistance Your forearm trainer can be adjusted to your strength. Erg The ergonomic, non-slip comfort handles ensure that you never lose your grip. Our strength handles have reinforced stainless steel tension springs and high quality, durable plastic bodies. These wrist amplifiers are perfect for musicians, lyricists, weight lifters, and people with arthritis problems.5. Rehabilitation devices As a rehabilitation device, the hand strength trainer is suitable for treating patients with hand injuries, tendinitis, arthritis, carpal tunnel and tennis elbow. to quickly strengthen targeted muscles without injury",