Comprehensively Upgraded Heating AreaOur heated socks use industry-leading heating technology, with heating wires evenly surrounding the soles and tops of the feet through the inlay, allowing them to be worn without feeling cold. foreign body and eliminate the unwanted experience of only the soles of the feet being heated. High Heat Generation & High DurabilityIn addition to providing a larger heating area to improve the heating experience, battery life is also very important to resist the cold, so our heated socks are con ?ues with long durability of 65 (4-5 hours), 55 (6-7.5 hours) and 44 (9-10 hours), allowing you to enjoy outdoor winter activities longer than ever. Comfortable Wearing ExperienceOur heated socks are made of double-knit wrap technology with a combination of breathable and abrasion-resistant materials that are odor-resistant, stretchy and warm, protecting your feet from the cold. Enjoy Outdoor Activities in WinterOur heated socks allow you to enjoy outdoor activities such as skiing, walking the dog, cycling, hiking, fishing and so on in the cold winter, you can keep your feet warm throughout the winter. User FirstThese heated socks can be washed by hand or machine with the laundry bag in the package, universal size, men and women 36-47 can be worn.