Kiribai Foot Warm Socks - Invisible Toe Inner Socks - 2 pieces (for 2 feet) - New "Foot Warm Socks" use "heat-retaining fibers" like a thermos to prevent heat from escaping the socks, providing lasting warmth. They're discreet and warm! 【How to Use】 Effective when used to warm your feet. ① Wear the toe inner socks with the seam facing up. ② Wear socks or tights over them. ◾️Size: Free Size (Fits approximately 23-27cm) ◾️Color: Black ◾️Type: Thin, approximately 1mm ◾️Purchase Date: 2026/1 Cold Sensitivity, Cold Protection ＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ ● Please understand that even if it's new and unused, it has been stored at home. ● Immediate purchase is possible without comments. Please refrain from price negotiations. Thank you.