USB Electric Powered Heated Insoles Keep Feet Warm Pad with USB Cable, Size: 37-38 yard, Size: 37-38yard

1. USB heated, make your foot warm.
2. Super soft velvet vamp, make you feel comfortable.
3. Can be used with computer or mobile power by USB wire.
4. Made of carbon fiber heating material, high conversion rate, saving power.
5. Adopt waterproof heating material, the insole is washable, you can wash it via brush, not for machine washing.