Lithium Battery Powered & Rechargeable Heated Insoles Keep Feet Warm Pad, Keep Warm 8-9 hours, Size: 39-40 yard, Size: 39-40yard Option:Size: 39-40yard USB charging output

USB charging output

Carton Size 28cm * 28cm * 24cm / 11

Carton Size 44cm * 24cm * 33cm / 17

Frequency response: 20 – 20 kHz

Lithium Battery Powered & Rechargeable Heated Insoles Keep Feet Warm Pad, Keep Warm 8-9 hours, Size: 39-40 yard, Size: 39-40yard Option:Size: 39-40yard USB charging output1. This is a portable rechargeable heated insoels. Built in lithium battery module. 2. High capacity batteries offer 8 9 continuous hours of runtime with fully rechargeable Batteries. Warming time is varies in different environment. 3. The heated insoles is made of elastic EVA foam, it soft and comfortable. 4. Made of carbon fiber heating material, high conversion rate, saving power. 5. Adopt waterproof heating material, the insole is washable, you