USB Electric Heated Shoe Insole Kit

This electric sock feet heater can warm up your feet. You can use it in sneakers, sport shoes, high heels, boots, leather shoes and loafers etc.
It is flexible and easy to bend, making you can easily put it inside your shoe.
The surface is designed with velvet which can absorb sweat, is comfortable to use and breathable.
The shoe insole is totally washable, due to the detachable battery design. You can easily wash it by hands.
It is durable and long lasting, is abrasion resistant and anti-breakage, you can trim the shoe insoles along the size line.