Massage can strengthen health and resist sickness Gel material, shock absorption and comfortable, clean and ventilate Separate sweat and deodorize, wash and use free You can cut the size according to the available curling line if necessary Function: 1. Spread the dummy's blood vessel, absorb the heat, and send the teat to devices over the body 2. Dismantle the harmful material of blood vessels such as calcium, lactic acid, uric acid exudate out quickly 3. Make your blood circulate smoothly Specification: Color: clear Material: EVA Size:4.5/6-12.5/14 Specifications: Massage can strengthen health and resist sickness Gel material, shock absorption and comfortable, clean and ventilate Separate sweat and deodorize, wash and use free Spread the dummy's blood vessel, absorb the heat, and send the teat to devices over the body Dismantle the harmful material of blood vessels such as calcium, lactic acid, uric acid exudate out quickly Make your blood circulate smoothly Package Included: 1pair*Magnetic Massage Insoles Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings