Large heating area design helps keep your feet warm in the cold winter. DIY adjustable design makes you can cut the length or size according to your needs. Soft EVA material makes you have a comfortable using experience. USB charging and washable design makes it more convenient to use. Made of high quality EVA material, it is durable. There are 2 sizes for you to choose. It can keep you warm for daily life, skiing, hunting, hiking, fishing and other outdoor sports. It is suitable for students, office workers or the elderly. Item Name: Heated Insoles Material: EVA Color: Black Power: 8-10W Gender: Unisex Features: Large Heating Area, USB Charging, Washable Size Details: Small Size Length: 230cm-250cm/90.55"-98.43" (Approx.) Large Size Length: 255cm-275cm/100.39"-108.27" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x USB Cable 1 x User Manual 1 Pair of Heated Insoles