Wrist Device Power Developer Strength Training Forearm Workout Equipment Adjustable Hand Grip Trainer Non-Slip | Power Wrists (Black) Features: This hand grip trainer is lightweight and easy to carry. Combined with a variety of exercise programs, it's great for strength training, flexibility, and balance. Helps you improve your flexibility in movement. The pull handle can be adjusted for different sized hands and arms. Exercise wrist strength adjustable wrist badminton fitness training equipment to enhance wrist grip strength thickened foam use: handshake and pull straps are made of thick foam to improve comfort and protect the wrist High-density webbing: high-density webbing, durable, not broken, Slidable, adjustable use of high-quality spring steel: highly elastic spring, super flexible, sharply bent, never cracked or deformed, ABS plastic: plastic is the key material that affects grip performance, it is better to use plastic plastic packaging, more Pressure-resistant, safer to use. Handshake high elastic non-slip non-absorbent sponge cover, the spring is tightly connected and not loose, suitable for everyone who loves sports Size: 12.5*17*31.5cm Net weight? 0.5kg Structural design 3. High carbon steel wire 4. Four-speed length adjustment