Product name: Silicone grip ball Product size about: 9.5*9.5CM/3.74*3.74IN Product color: As shown in the figure Product material: ABS product features: 1. High-quality material: This grip circle hand trainer is made of high-quality silicone material, which has good elasticity and durability and can be used for a long time without being easily deformed or worn. 2. Multiple resistance options: The product is designed with 6 different resistance levels, suitable for users with different strength levels for training. From beginners to professional athletes, everyone can find a resistance level that suits them. 3. Multifunctional training: In addition to being used for hand grip strength training, this trainer can also be used for finger joint exercises to help enhance hand muscle strength and flexibility. 4. Lightweight and portable: This grip circle hand trainer is small in size, light in weight and easy to carry. It can be used for hand training anytime and anywhere, such as at home, in the office or in the gym. 5. Comfortable use experience: The product has a smooth comfortable hand feel, and is not easy to slide or irritate the skin, making users feel comfortable and happy during the training process. Precautions: 1. As we know, different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you find it difficult to choose the size, you can contact us at any time. We will give you some suggestions but for your reference only. Shipment includes: 1 pc Silicone grip ball