Note: The stainless steel ball contained in this product can be disassembled. If you have the steel ball falling after receiving the product, you can manually install the steel ball back without affecting the use, thank you. Features: Convenience to message by yourself at any time to relief fatigue Can massage your back to relaxes the muscles and inprove blood circulation. Relax tensed muscles after exercise. Can massage obese part.Strengthen metabolism.Eliminate moisture and fat. Specification: Material: PP+Stainless Steel Color: Blue, Green, Pink, Rose Red Package include: 1 x massage gloves Note: 1.Asian Chinese Size is Smaller than US or European Size,Please allow 1-2CM differs due to manual measurement. Please check above size details carefully. 2. Items are measured by hand, there will be a slight deviation. Hope you understand. 3. The item color displayed may be slightly different on your computer monitor since monitors are not calibrated same.