Kobayashi Pharmaceutical Kiribai Socks That Don't Make Your Feet Cold, Toe Inner Socks, Set of 3, 23-27cm, Thermal Socks, Kiribai Foot Cold Relief, Warm New Size: 23-27cm Color: Black Although it is new and unused, please understand that it has been stored at home. When shipping, we will only take measures to prevent water damage and fold the bag portion to ship via Yu-Packet Post Mini. The following is a product description: Thin, about 1mm, for cold feet ● Wraps and warms your feet ● Wear inside socks ● Entirely made of special heat-retaining fiber TM, so it's warm ● Perfect fit ● Free size ● 23-27cm ● Black "Socks That Don't Make Your Feet Cold" are "thermal socks for cold feet" that use "heat-retaining fiber TM" to prevent heat from escaping inside the socks like a thermos, keeping you warm.