Socks Supplement: Cozy Room Socks, Just Like a Heated Kotatsu Color: Greige Size: 23-25cm Material: Acrylic Thanks to a unique knitting method, this product warms the San Yin Jiao point, a pressure point on the ankle that protects against cold, keeping your toes warm as well. *The socks will be shipped in a Yu-Packet Post Mini envelope after being removed from their original packaging. *When washing, please use a laundry net and wash with a neutral detergent. Although this product is new and unused, it is a foreign product, so there may be some loose threads. Please understand this before purchasing. ★Other colors are also available! Autumn/Winter, Women's, Cold Protection Black, Off-White, Gray, Greige, Beige, Lavender Kotatsu-style, Similar to Kotatsu Socks Warm Socks