MOISTURE WICKING & ODOR CONTROL: 79.5% Rayon from Bamboo, 17.7% Polyester, 1.1% Spandex, 1.7% Elastic. The hollow structure of Bamboo fiber makes them super-absorbent and breathable. Bamboo made socks can wick away sweat and quick dry. Bamboo fiber provides a natural way to fight infection growth which keeps the sweaty smelly feet odor free. HIGH PERFORMANCE: Extra cushioned sole provides the perfect amount of support, allow you to walk in comfort all day long. Mesh on top reduce heat and make the feet at the perfect temperature and smell fresh during any physical exercises. ULTRA SOFT: Unique hidden seam toe is free from any irritating seam, suitable to sensitive feet. Super stretchy top goes on easy and stays up. Gently conforms to your feet without squeezing. MULTI-COLOR & FOR ALL SEASONS: Comes in various cute vivid solid colors for Sports & Casual. Premium Bamboo fabric allows air to circulate. Thermo-regulating keeps your feet cool during the warm months and helps maintain the heat during the cold days. LONGLASTING: They may look smaller generally, but they are super stretchable. Bamboo fiber will be much softer after the first wash. We suggest you wash them before you put them on. The fabric is durable and sustains its softness even through multiple washes.