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New double sided heating socks Material: Modal core spun yarn DetailsSingle sided heating socks Material: combed cotton Details Product name: Electric socks Product weight :260g Temperature range :45-65°C Product color: Black, gray Product voltage :3.7V Material: Cashmere anti-pilling Modal The power ports are insulated and waterproof Remove the battery before washing Note: Cleaning instructions It can be washed by machine or hand. Please do not wring it out by hand Because its internal heating wire is made of carbon fiber wire, unlike copper wire will conduct electricity, it can also be cleaned in the washing machine, and there is no need to worry about cleaning. Note: Make sure the socks are thoroughly sun-dried or dried.