1. Material: EVA, carbon fiber heating wire, composite cloth, plastic
2. Power supply: 3 x AA batteries (not included)
3. Suitable for shoes: sports shoes, casual shoes, warm shoes, boots
4. Warm electric heating insole, soft and comfortable
5. Carbon fiber heating wire, whole foot heating
6. Straps fixed by hook and loop, not easy to slip off
7. Size line design, cut at will
8. Washable and dryable, easy to use on the go
9. Weight: about 220g
10. Size: uniform size