Made in Japan Hakuraku socks using the developed material "WARM WAVE". Room socks. One pair is 1320 yen! For measures against cold feet. ■ What is WARM WAVE? This is a developed material from Toray Industries, Inc., Toyobo Co., Ltd., and Okamoto Corporation. By mixing Toray's heat-retaining fiber "Torcon", Toyobo's moisture-absorbing and heat-generating fiber "[eks]", and acrylic and wool, it is a material that can provide warmth. ・ Heat retention: Torcon (heat-retaining insulation fiber) ⇒ Because of its low thermal conductivity, it does not easily release heat and maintains a comfortable temperature. ・ Moisture absorption and heat generation: [eks] (moisture-absorbing and heat-generating fiber) ⇒ It absorbs moisture and generates heat, so it is warm. ■ Precautions for use This product is designed for indoor use and emphasizes softness. Therefore, it is weak against friction and is not suitable for outdoor use. Product Information Product Name: Hakuraku Polka Dots Gray Strong Heat Generation (WARM WAVE) (for home use) Material: Acrylic, wool, etc. Country of Origin: Japan Size: 22-24cm Color: Gray Function, Features: Warms feet and prevents heat from escaping, thorough heat retention