FeaturesFar infrared carbon fiber, through a special process to produce a thickness of only 0.02cm/0.01", soft sheet heating material, its heating evenly, high heat conversion rate, rapid heating, soft and comfortable.Safe and reliable, the output voltage of the USB interface is only 5V, the output voltage of adapter is only 6V, and with voltage regulator protection device, the two output voltage is lower than the body safety voltage 36V.Energy-saving environmental protection. Power less than 8W, an average of 125 hours consumption of 1 kWh.Can be directly placed in shoes, easy to save. Feet separation, flexible and convenient.Power,USB socket, one end of USB power line is connected with computer USB socket, and the other end is connected with insole.Soft sole, comfortable to wear. It also can be used as home shoes.Plush type, pink model is for female, grey model is for male.A good gift to parents, children, lover and friends. Specifications Product name: USB Heating Shoes Material: Plush Size: One Size Male: SIZE 39-43 ( 24.5Cm/9.64" )to ( 26.5Cm/10.43" ) Female:SIZE 35-39 ( 22.5Cm/8.85" )to ( 24.5Cm/9.64" ) Color: pink gray Max temperature: 55 Length of cable:150cm Voltage: 5V Wash and care: hand washing by water Notes Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow 1-3cm difference due to different manual measurement.Thanks for your understanding Packing list 1 pair x heating shoes 1 x USB cable(radom color)