Thank you for viewing. This item is new and unused. We will carefully package and ship it promptly. Thank you for your consideration. 【Warm Ankles】 The ankles are where four acupressure points related to coldness are concentrated. Instead of just bundling up for warmth, effectively warming these points provides a foot bath-like effect, enveloping the whole body in warmth. 【Designed by Foot Professionals】 Warm with far-infrared rays and double knitting. Creates an air layer to prevent warmth from escaping and keeps you warm. Outer layer: Far-infrared processing gently warms. Inner layer: Silk material, gentle on the skin and highly absorbent. 【Excellent Elasticity】 Softly knitted, it has excellent elasticity and is comfortable to wear. Comfortable to wear without feeling constricted. The fabric is neither too thick nor too thin, making it easy to wear under pants. Convenient to carry around. Can be used anytime, anywhere! 【Free Size】 Unisex. Flat size is approximately 20cm in length, approximately 9cm in width. Please note that there may be an error of approximately ±1cm in the flat measurement. 【Helpful All Year Round】 The fabric is neither too thick nor too thin, suitable for all seasons. Can be used regardless of the season or place, such as when sleeping, doing housework, in an air-conditioned office, or outdoors. Thank you for viewing. Color: Black系 (Black-based) Stains, tears, odors, etc.: None