Description: Stretch healthy fingers, exercise hand strength, and restore finger health. 1. exercise finger strength 2. Silicone is not easy to deform 3. Soft and comfortable 4. Suitable for all ages 5. Sturdy and compact to wear 6. Strong and durable. Specification: Category: Rally Material: Silicone Size: 9X5.5CM Applicable scene: fitness Equipment: Tensioner Effect selection: wrist training Applicable object: sports and fitness people Color: light gray (low intensity), blue (medium intensity), black (high intensity) Package Include: 1pc * Tensioner Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement.