Description: Being lightweight and portable, this hand grip exerciser is easy to carry in your pocket or bag, so that your hand workout will be unlimited, whether you're reading, working, walking or traveling, you can strengthen your hands anytime, anywhere. With an ergonomic design, this product provides you with a comfortable experience while ensuring the safety and challenge of hand exercise. It is constructed of silicone material. The diameter of the product is 12.5cm. It is suitable for men, women, the elderly and teenagers. Item Name: Finger Trainer Material: Silicone Features: High Elasticity, Fine Workmanship, Portable Size Details: Diameter: 12.5cm/4.92"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Finger Trainer Being lightweight and portable, this hand grip exerciser is easy to carry in your pocket or bag, so that your hand workout will be unlimited, whether you're reading, working, walking or traveling, you can strengthen your hands anytime, anywhere. With an ergonomic design, this product provides you with a comfortable experience while ensuring the safety and challenge of hand exercise. It is constructed of silicone material. The diameter of the product is 12.5cm. It is suitable for men, women, the elderly and teenagers.