Features: Keep warm and comfortable with our Velvet Heated Insoles. The temperature can be adjusted from 40 to 65℃ (104℉ -149℉), and with a wireless remote control, there is no need to bend down to remove the insole. Made with composite carbon fibers heating pad and velvet material, our insoles provide a soft and comfortable feeling. They only need a few second to heat up, keeping your feet warm and comfortable. Perfect for outdoor enthusiasts, elderly, women, and anyone who needs warmth. Our insoles are suitable for most shoe sizes and can be trimmed according to the size reference or your shoe size. Whether you're hiking, working in a cold environment, or simply relaxings at home, our heated insoles will provide warmth and comfort to your feet. Our insoles feature overheating protections and a sturdy construction. Enjoy long lasting warmth with the built in rechargeable battery that lasts. Specifications: Material: Velvet+Osley foam+composite carbon fibers heating pad Color: Black/Red/Blue 34-40 Size: 230-265mm/9.05-10.43inch (Cuttable) 41-47 Size: 271-303mm/10.67-11.93inch(Cuttable) Battery: 3.7V, 2000mah Charging interface: Type-C Charging time: 3-4 hours Heating time: 3.5-7 hours (may vary depending on external temperature) Package Includes: 1pair Wireless Heated Insoles note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.