This Women's Heated Pullover combines updated carbon fiber heating elements and 3 concentrated heating zone in chests & upper-back to provide the fastest heat to your body. With 3 heating zones and up to 10 hours of working time, this pullover is perfect for outdoor activities in temperatures ranging from 10° F to 54° F. The soft and breathable fabric, made of 80% cotton and 20% polyester, ensures long-lasting warmth and comfort. Plus, the pullover is easy to care for and machine washable with over 80 cycles tested for safety. Whether for a walk, hike, or team sport, this heated pullover will keep you warm and dry on cold winter days.