Material: Eva foam
Charge: USB Rechargeable
Size: DIY Customizable, Unisex for Men and Women
Uses: Outdoor, Camping, Skiing, Hunting, Winter Insole Foot Warmer, Heated Shoes Pad
Size 39 fits USA size 3.5 to 8
Size 44 fits USA size 8 to 11
USB Rechargeable Heated Insoles: This heated insoles adopt new heating technology, made of comfortable EVA stretch material, with good cushioning, lightweight, the heater is comfortable with USB interface is used for heating via the USB cable, large heating surface, even heat distribution, temperature reach up to 50 °C/122 ℉.
Cleanable & Repeatable Use : This usb insole material is waterproof, is washable and reusable, you can wash it via brush, not for machine washing, it should be noted that it needs to be dried after washing, and must be completely dried before use.
DIY Adjustable Insoles Size: These insoles can be cut into your needed size, heated insole is 5 mm thick, you don't have to worry about the size.
1 Pair Double heating insole
1 Charging line