Features: It can heat by connecting power, the shoe can't store electricity.This electric heating shoe can get hot for a long time.Powered by a large capacity lithium battery, the high conversion carbon fiber is used as a heating material. It can also be heated directly with the charger.Specifications: Height: 20cm/7.9inchCable length: 150cm/59inchMaterial: PlushSize: pink for 230-250mm feetGray for 245-260mm feetBrown for 255-270mm feetPackage content: 1 Pair x Electric Shoes1 x USB CableNotes: 1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.