Feature: 1. Multifunctional: Heat up a wide range of feet to improve cold feet, carbon fibre material heat, effectively stimulate blood circulation, help to resist cold weather. 2. Mesh Upper Design: Sweat wicking and breathable mesh, the insole is designed with a mesh upper to fit the foot and absorb sweat. 3. Elasticity: Light and soft environmental protection insole with elasticity and shock absorbing softness to enhance the walking texture. 4. Three Adjustment Levels: High temperature, medium temperature and low temperature, with the body's perception of warmth and cold to adjust to a comfortable position, but also improve blood microcirculation, blood circulation, activation, promote metabolism. 5. Charging: Fast charging, long use time, charging 4 hours, use 10 hours, bring you more convenience, let you use more convenient. Specification: Item Type: Heated Insoles Material: Microfiber Cloth Insole Battery: 2 x Li Polymer Batteries 2000mah (Included) Remote Control Battery: 1 x 23A Battery 50mah (Included) Output: DC 4.2V-5V 500 x 2 Power Output: 98% Level: High Temperature, Medium Temperature, Low Temperature Charge: 4 Hours Charge, 10 Hours Use After turning on, the remote control temperature control operation: 1. Press the H key for 3 seconds, enter the high temperature mode, the temperature between 50-60 degrees, the LED light is always on; 2. Press and hold the M key for 3 seconds to enter the medium temperature mode, the temperature is between 40-50 degrees, (the first 10 minutes. After 10 minutes. As above 3. Press and hold the L key for 3 seconds to enter the low temperature mode, the temperature between 35-40 degrees, (10 minutes before and 10 minutes after.) As above, 4. Press the heart key, LED lights slow flashing, stop heating, enter the standby mode (remote control can not switch on and off). Package List: 1 x Pair of Shoe Insoles1 x Usb Data Cable1 x Remote Control1 x User Manual