Okamoto Hakuraku Socks - Socks to Warm Your Feet and Prevent Heat Loss - Relaxed Soft Cuffs - For Home Use - 2 Pairs - Charcoal 24~26cm Product Description Thoroughly retains heat. Warms your feet and prevents heat loss. The moisture-absorbing and heat-generating, heat-retaining material "Warm Wave" thoroughly warms your feet from the ground up. Relaxed soft cuffs for a comfortable fit. Easy to use everyday. Color: Charcoal. Length: Approximately 27cm Warm Wave is a material developed by Toray Industries, Inc., Toyobo Co., Ltd., and Okamoto Corporation. By mixing the heat-retaining functional fiber "Torcon(R)", the moisture-absorbing and heat-generating fiber "[eks(R)]", acrylic, and wool, it provides comfortable warmth. Product Information Material: Acrylic, polyester, synthetic fiber (ex), wool, synthetic fiber (Torcon), polyurethane. Country of Origin: Japan. Features: Moisture-absorbing heat generation, heat retention, relaxed soft cuffs. Color: Charcoal Pattern/Design: Solid Sock Length: Mid-calf