Features: 1. High Temperature Resistance: The finger exerciser is applicable to the temperatures ranging from -40 to 240 degrees Celsius. 2. Easy to Clean: The silicone finger exerciser can be cleaned after washing with water. 3. Durable and Practical: The silica gel material are very stable, and the silicone finger exerciser is durable and practical. 4. Soft and Comfortable: Thanks to the softness of the silicone material, the silicone finger exerciser feels comfortable to the touch, which is extremely flexible, and it does not deform. 5. Optional Colors: There are many colors and different finger exercisers for you to choose from. Specifications: Name: Silicone Finger Exerciser Standard: about 9.5*9.5cm Function: finger recovery and training Pink:10 pounds Mint Green:20 pounds Orange:30pounds Green:40pounds Purple:50pounds Blue:60pounds Packing List: 1 * Silicone Finger Exerciser Notes: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.