Upgraded Carbon Fiber Heated Socks: These heated socks are made with carbon fiber filaments that emit far infrared light, and can stimulate your blood circulation, focus soothing heat on the soles and toes, improving thus blood circulation in the limbs and helping to protect the feet from the cold. Excellent for foot arthritis, cold feet and stiff joints. Give you a warm winter. Soft and breathable high quality material: The heated socks are made of premium combed cotton and the heated socks are made of grade A combed cotton and spandex, absorbent, breathable, dry fast and good elasticity. Our heated socks are hand-sewn, fine workmanship, they can also cover the calf, light and not bloated, which can keep your feet warm and accelerate blood circulation, keep you warm all winter. Smart Three-Speed Temperature ControlThe range of heat settings on these warm socks means you can choose how long you want the heat, as well as the temperature, as well as the temperature, low 35-40 degrees, medium 45 -50 degrees, high 50-60 degrees, you can adjust the appropriate temperature according to different environments, meet the needs of different people.4500mAh large capacity batteryThe rechargeable heated socks are equipped with two large capacity batteries of 4500mAh, giving you up to 7.5-17 hours of heat. At the same time, this heated sock is also equipped with a USB data cable. You can remove the battery or insert the battery at any time, and put it in the battery bag. What's more, this heated socks charger has been updated with overcharge and overcurrent protection, which is safer than most similar chargers and USB chargers on the market. Ideal winter gift and perfect Christmas idea : Electric heated socks are also a great gift, keeping you warm and comfortable all day, ideal for skiing, hiking, hunting, ice fishing and other winter indoor/outdoor activities. Battery powered thermal socks are a great gift for cold seasons and are in thermal heated clothing to give the best category, have a warm winter together.Product You are always afraid of not finding warm socks or shoes in winter ?Vintage heated socks will give you a warm winter. It starts with your feet and provides heat all over the body.2 4500mAh lithium batteries.The heating element of this pair of socks has been upgraded to a heating element made of carbon fiber yarn. The heating wire is hidden in the forefoot position, so your toes quickly feel warm and you are no longer afraid of the cold. Equipped with 2 x 4500mAh large capacity batteries. Give you a warm winter. It is the best gift for parents and grandparents. The perfect outdoor partner. It is very suitable for hunting, fishing, riding, camping, hiking, motorcycling, skiing, mountaineering, hiking and outdoor work, etc. To avoid cold feet Tips: These heated socks are made of pure cotton. They are thicker and warmer than regular socks. It has good breathability and excellent sweat-wicking effect. Note: Not recommended for children. Please fully charge 2 batteries before first use. Press once to turn on, long press to turn off.Washing instructions:Remove the mobile power supply and reinsert the battery cable into the battery bag before cleaning.If you wash the socks in a washing machine , it is best to put them in a laundry bag. Do not wring by hand when cleaning. Make sure the socks are thoroughly dried before use after washing.Contents:1 pair of socks.2 4500mAh batteries.1 charging cable.1 user manual.