Okamoto Hakuraku Socks - Socks to Warm Your Feet and Prevent Heat Loss - Relaxed Soft Cuffs - For Home Use - 2 Pairs - Gray - 24-26cm - 38cm Length - Over-the-Knee Socks - Made in Japan Product Description Thoroughly keeps you warm. Warms your feet and prevents heat loss. The moisture-absorbing and heat-generating, heat-retaining developed material "Warm Wave" thoroughly warms your feet from the bottom up. Relaxed soft cuffs for a comfortable fit. Easy to use everyday. 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 Size: Features: Moisture-absorbing and heat-generating, Heat retention, Relaxed soft cuffs Color...Gray Pattern/Design...Solid Sock Length...Over-the-Knee Socks