Socks Supplement Okamoto Just Like a Kotatsu Sleep Switch Made in Japan Warms your body from your feet with patented technology. This is the "Just Like a Kotatsu" series' "Socks Supplement Just Like a Kotatsu Sleep Switch." For nights when your feet are cold and you can't sleep... just wearing these will support a good night's sleep and easily help with coldness. With three sleep switches, your feet will be warm, and you'll be enveloped in warmth just like a kotatsu. [For Coldness Prevention While Sleeping] It covers the soles of your feet, where blood vessels are concentrated, and warms them all the way to your toes. Because it's an open-toe type, you can use it comfortably while sleeping without your toes getting stuffy. ◼️Size: 22-25cm ◼️Material Composition: Acrylic, Wool, Others ◼️Color: Lavender ◼️Country of Origin: Japan The product will be taken out of its bag once, and the bag and product will be waterproofed for shipping.