Description: Premium MaterialHand grip strengthener is made from high quality aluminum alloy, featuring high flexibility and durability, strong enough for heavy duty exercise. Ergonomic Grip DesignThe powerful hand gripper is ergonomic and easy to use. Ergonomic lines on the surface non slip ensure the of training. Portable Pocket SizeGrips strength exerciser with a compact design, you can take this grip strength training with you and exercise anywhere: at home, workplace, or even on travel. Hand TrainingHand gripper is great for finger, wrist & forearm training, building up hand strength and increasing hand strength, improving grip, and the flexibility of fingers. Applicable PeopleWrestlers, athletes, musician, muscle builders, and exercise trainers, whether they are beginners or professionals, this grip exerciser is the best choice. Specification: Material: Aluminum alloy Size Chart: 13cmx1.6cmx10cm/5.12inchx0.63inchx3.94inch Package Includes: 1 Hand Grip Strengthener Trainer 2 Sponge Sleeves Note: Please allow slightly errors due to manual measurement and different monitors.