High conversion efficiency, energy saving, the average hour with one degree of electricity.Easy to cut to the size you need.Applicable to various shoe types.Make your foot more comfortable and warm.Removable design, convenient and clean.Color:BrownVoltage: 5VSize: CN SIZE 35 to 36(approx. 23cm)CN SIZE 37 to 38(approx. 24cm)CN SIZE 39 to 40(approx. 25cm)CN SIZE 41 to 42(approx. 26cm)CN SIZE 43 to 44(approx. 27cm)CN SIZE 45 to 46(approx. 28cm)Package Includes:1*Heating insole + USB cable(Does not include a power adapter)Quantity:1PairPlease allow 1-3cm error due to manual measurement, please make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!