Features: brand new and high quality Durable Material: These balls are made of silicone material, very lightweight and easy to put in pockets and carry-on bags. You can use them to exercise your hands any for time, any where. Excellent Design: 360° thorn ball wrap, easy to massage in all directions, these training balls are easy to clean by washing. Then let it dry naturally so you can reuse it. Relieve Tension: Forearms and relieve daily stress with simple exercises, it can be used for hand massage, soft texture, comfortable hand feel, and strong elasticity. Easy to Use: Grip training balls can not only help you strengthen hand exercises and relieve joint pain, but also help patients with hand injuries in rehabilitation training. Versatile Use: Our massage ball is perfect for adults, children or the elderly, suitable for relieving muscle stress and hand fatigue, strengthening hand grip, etc. Specifications: Material: Silicone+Nylon Rope Color: Green/Blue/Orange/Black/Green White/Blue White/Orange White Package Weight: approx.40g Diameter: approx.70mm/2.75in Package Includes: 1Pc x Hand Grip Ball with Rope note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!