Features: Experience all day warmth with these electric heated insoles featuring advanced temperature control technology and durability EVA, designed to combat cold feet during winter activities. Lightweight EVA foam construction ensures flexible cushioning and rapid heating response, while the ergonomic design contours to foot shapes for without fatigue wear during extended use. Perfect for outdoor enthusiasts, commuters, and cold sensitive individuals seeking great thermal comfort during skiing, hiking, or long hours of standing. Staying cozy during frosty mornings, snow adventures, or daily errands with slip resistant heated inserts that adapt for boot, shoes, or work footwear for versatile protective. Engineered with safety heating accessories and moisture wicking layers, rechargeable insoles, adjustable warmth, for safety winter mobility. Specifications: Component: EVA Color: As pictures shown. Optional Foot Size: 35-40, 41-46 Battery Capacity: 3000mAh Control: Wireless APP Remote Control Package Includes: Electric heating insoles with builts in rechargeable battery × 1 pair note: Please allow 1-3cm error due to manual measurement. please make sure you not mind before you bid. Due to the differences between different monitors, the picture may not reflect the item actual color.