Introducing the even warmer Premium Warm socks, newly released by Okamoto, the makers of Marude Kotatsu Socks (Socks Like a Heated Kotatsu). These socks have about twice the volume (thickness) of the Marude Kotatsu Socks! The inside is brushed, making them very warm. Recommended for those who suffer from cold feet. *There is no outer packaging (only the socks themselves), but they are new and unused. Please purchase only if you understand this. 【Comfortable Warmth】 These Premium Warm socks use heat-generating material on the San'inko area, a pressure point above the ankle. Perfect for the cold season. These are for indoor use. Please be aware that wearing these with shoes may cause them to tear due to friction. Also, as they are knit products, they will shrink if put in a dryer. Treat them the same as you would a sweater. The dimensions of each sock vary. The dimensions of the left and right socks in a pair are not exactly the same. Two socks with similar dimensions are paired and sold as one pair. Furthermore, the dimensions will change with wear and washing. - Size: 23-25cm - Color: Ash Gray - Retail Price: 4950 yen Due to the inability to combine shipping, combined purchases with other products are not possible. Also, price reductions are not possible at this time. We will ship via Yu-Packet Post on the same day or the next day after your purchase.