1. Lightweight: The tennis racket grip strength trainer has a relatively light overall weight and will not significantly increase the weight of the racket. Even when held for an extended period, one may not easily feel tired. 2. Silicone material: The tennis racket grip strength trainer is made of silicone material, which feels soft and comfortable and is not readily damaged. 3. Exercise tool: Using the tennis racket grip strength trainer can exercise the finger grip spacing and assist us in playing the ball better in sports competitions. 4. Sports accessory: The tennis racket grip strength trainer can help us hold the tennis racket more firmly, reducing the likelihood of the racket slipping, which is quite practical. 5. Compatibility: The tennis racket grip strength trainer is suitable for various kinds of rackets. It has a wide range of applications and can provide a comfortable feel when people play tennis. Product type: Tennis racket grip strength trainer Material: Silicone Weight: Approximately 5 grams/0.2 ounces Package contents: 4 tennis racket grip strength trainers