?????????2020 Upgraded Heating Design with Larger Heating Area? Unlike many other heating socks that with uncomfortable wires or burn your feet, our heat socks have been revolutionary upgraded with invisible heating wires, and enlarged the heating coverage to the whole toes area, instep and foot front. It can stimulate your blood circulation at the same time keep your feet warm. Designed for arthritis foot, cold feet and stiff joints. ?????????3.7V 5000mAh Rechargeable Batteries & 4 Temperature Settings? Flagicon Rechargeable heated socks are equipped with 2 5000mAh batteries, the largest capacity in the market, providing you with up to 16 hours enduring warmth. 4 heat settings supported, you can choose your desired temperature from 98? to 160?. The perfect choice for cold winter. ?????????Premium Soft Material?The electric heated socks are made of premium 75% nylon/10% polyester/15% spandex material, super warm, absorbent, quick-drying and high elasticity. The heated socks are the best gift choice for Halloween,Thanksgiving, Christmas, Birthday and other festivals. Hand wash and machine wash supported, you will also get a bonus laundry bag. ?????????Ideal Choice for Men & Women? Fashion design, fit for US unisex shoes size 9-13. Perfect for a variety of indoor and outdoor events like skiing, hunting, fishing, hiking, walking dogs, snowboarding, motorcycle, riding, camping, cycling, climbing, etc. ?????????Safe to Use & 100% Satisfaction Guarantee? Our heated socks have passed CE, FCC certification, they are 100% safe to use. We offer 30-day full refund/replacement, 12-month quality warranty. If you have any problem, please feel free to contact us for any question, we will come back to you within 24 hours.