Specification: Item Type: Heated Feet Warmer Material: Plush Color: Size: 38-39 Package List Package Include: 1 x Pair Of Heated Feet Warmer 1The Heated shoes Warm up quickly in 3 minutes, Perfect to keep your feet warmer while you studying, working, chatting, watching TV in the cold weather. best gift for you friend and family. 2Our heated shoes are soft inside, the soles are wear resistant and non slipping. The fabric is very elastic, The Heated house shoes make the feet comfortable and warm, preventing the feet from being cold damaged in winter. 3Remember take out the heat pad when you want to hand wash the House slippers. And the heating pad can be put into your other shoes as a roaster to keep your shoes dry and comfortable. 4Our heated slippers is powered by USB, Just simply connect from USB cable,link to USB port on the power bank ,computerwall charger,car charger or any USB plug board . 5Heat up to 55. Insulated heating wire with NTC helps monitor real time temperature and prevent from over current and overheating.