Description: 【Suitable for Everyone】: The hand exercise ball improves strength, power, and speed in the wrists, fingers, and forearms. It can undoubtedly the best choice for rock climbers, tennis players, and athletes, and it enhances the flexibility of fingers and wrists. 【Comfortable and Durable】: The hand grip strength trainer is fit for small, and large hands, seniors, and teens but also ensures comfortable holding. The resistance of the hand grip strengthener is perfect for both men and women with different strengths. 【Hand Grip Exerciser】: Strengthens Grip and Improves Dexterity: Hand exercise rings build strength in the fingers, hands, wrist, and forearms. 【Compact and Portable】: Size: 6cm/2.36inch, Easy to carry and use anywhere: at home, workplace, or travel. 【Great Gift】: This is a perfect gift choice for someone who is a sports, golf player, boxing, drummer, guitarist, pianist, and much more. Specification: Material: TPR Package Includes: 1 Hand Exercise Ball Note: Please allow slightly errors due to manual measurement and different monitors.