Features: Keep your feet warm this winter with these Self Heated Thermal Insoles. Made with highly elastic breathable cotton and cotton wools, these insoles are not only warming but also soft and comfortable. Suitable for both men and women, these insoles are perfect for anyone looking to keep warm during the cold season. Whether you're going for a winter hiking or just need some extras warmth at the offices, these insoles are great for various activities and settings. Upgrades your winter footwear with these self heating shoe pads and enjoy comfort and warmth all day long. Specifications: Material: PU Color: GreyColor/Pink/BeigeColor Size: 35-36/37-38/39-40/41-42/43-44/45-46/ 35-36 length: Approx. 235mm/9.25inch 37-38 length: Approx. 245mm/9.65inch 39-40 length: Approx. 255mm/10.04inch 41-42 Length: Approx. 265mm/10.43inch 43-44 Length: Approx. 275mm/10.83inch 45-46 length: Approx. 285mm/11.22inch Package Includes: 1 Pair Thermal 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.