Our heated insole uses carbon fiber heating element for heating. Compared with the far-infrared heating elements of other products, the carbon fiber heating element has the advantage of faster heating. It only takes 5 seconds to heat up quickly, and there is no need to wait to keep warm. The battery is protected by a PC case and can hold up to 440 pounds, allowing you to experience the warmth of the insole with maximum comfort during winter sports.

?Cut To Fit Size? It can be adjusted to your shoe size, trim the soles for the perfect fit following size guide.( We suggest to wear this heated insoles with loose shoes, it will be more comfortable.) S: 35-38 M: 39-42 L: 43-46 (can be cut). ?Temperature Adjustment? The heating insoles have a built-in 3.7V rechargeable batteries. There is different estimated heating time for different heated levels. High (III): 150F – 3.5-4.5 Hours Medium (II): 130F - 5-6 Hours Low (I): 110F – 6.5-7Hours. ?Safe and Comfort?Environmentally friendly material. Excellent waterproof PU material with built-in PC case of battery. Each insole equipped with high density, safe lithium-polymer battery. The PU material is soft and comfortable, and it will not deform even if withstand 440 pounds( 200 KG). It can be washed in water. ?Easy to Use? Wireless, intuitive remote control for maximised operational comfort. Each pair of heating insoles is equipped with a temperature remote control and adopts LED digital display, so the temperature can be adjusted intuitively on the remote control according to your needs (104-150?). ?Scientific Heat Preservation? According to the characteristics of the human blood flow, foot warmer heating up the soles of the feet, which promotes blood circulation, thereby increg the temperature of your whole body, so that you are no longer afraid of the cold winter. Whether you are hiking, hunting or on a ski trip, these insoles protect your feet from cold winter winds.

Power Source: Battery Powered. Material: Carbon Fiber. Color: Black. Brand: ZAPAL. Size: Medium. Date First Available: September 8, 2022. Best Sellers Rank: #396,680 in Health & Household. Customer Reviews: 4.4 4.4 out of 5 stars 7 ratings 4.4 out of 5 stars. : B0BD3VHYWR. Manufacturer: ?ZAPAL. Suggested Users: ?Unisex-adult. Model Name: ?Heated Insoles 5. Warranty Description: ?2 year manufacturer. Brand Name: ?ZAPAL. Package Weight: ?0.31 Kilograms. Item Package Dimensions L x W x H: ?12.6 x 4.8 x 1.65 inches. Reusability: ?Rechargeable. Included Components: ?Heated insole. Battery Description: ?Lithium-Polymer. Recommended Uses For Product: ?Hiking. Power Source: ?Battery Powered. Material: ?Carbon Fiber. Color: ?Black. Brand: ?ZAPAL. Size: ?Medium.