【Latest Improved Heated Socks】Our heated socks use far-infrared radiation fibers and add acrylic fiber "Ceramic A" to achieve a heat retention effect far exceeding that of ordinary acrylic materials. These heated socks newly adopt an improved 0.5mm heating wire, and the heating range has been expanded from the conventional toe area to all-around heating for the toes + sole + instep, and the high-quality and safe rechargeable heater can warm up the surroundings of the heater in 5 seconds. When you wear them, you will always feel the warmth like a kotatsu. 【Prioritizing Comfort】The heated socks use high-quality merino wool blend fabric, achieving excellent cold protection and heat retention performance, while also providing elasticity, breathability, quick-drying properties, and absorbency. The deodorizing yarn used in the lining suppresses the growth of bacteria in the socks and reduces odor problems. You don't have to worry about unpleasant odors even after wearing them for a long time. Furthermore, the construction is carefully designed with neatly arranged seams and increased thickness at the toes and soles, so you can wear them for long periods and walk without getting tired! 【3-Stage Adjustment & Great for Winter】The heated socks are an improved version and support 3-stage temperature adjustment (low temperature mode: 45℃, medium temperature mode: 50℃, high temperature mode: 55℃). Easily switch with one button. The battery capacity reaches 5V 5000mAh, and can operate for 3-6 hours depending on the mode setting, which is sufficient for a day's use. It is a reliable item for those who need cold protection, and as support for those who are prone to fatigue or have reduced concentration. All batteries included with this product have been verified for PSE technical standards compliance. 【Washable & Machine Washable】These heated socks are available in two sizes (M/L) and colors (gray/black) to meet the various needs of our customers. The heated socks can be hand-washed or machine-washed. They solve the problem of the conventional products not being compatible with machine washing and drying, making them more convenient to use in winter. It is recommended to use a laundry net when washing in a washing machine. Be sure to remove the battery before washing. 【Unisex & Useful in Various Scenes】These heated socks are unisex. The battery pocket is reinforced, so it's stable enough that you don't have to worry even if you wear them for a long time or walk around! Package contents: Heated socks body * 4, 5V 5000mAh dedicated battery * 4, charging cable * 2, Japanese instruction manual * 1.