MOISTURE WICKING & SMELL CONTROL: 81.1% Rayon from Bamboo, 16.5% Polyester, 1.4% Spandex, 1.0% Elastic. The hollow structure of Bamboo fiber makes them super-absorbent and breathable. Bamboo made low cut socks wick away sweat and quick dry. Compared to cotton, its properties can provide a effectively way to keep the sweaty feet smell free. CUSHIONED SOLE & MESH ZONES: Extra super soft cushioned sole provide the perfect amount of support, absorbs impact and protect your arch and ankle from injury due to shoes friction. Mesh on top can reduce heat and make the feet at the perfect temperature and smell fresh during any physical exercises. ANTI-SLIP & HIDDEN SEAM TOE: Reinforced heel makes sure the +MD Bamboo low cut socks stay in place and give your foot the perfect fit. +MD unique hiding seam toe design do the best to make your toe release from any discomfort or irritation. MULTI-COLOR & FOR ALL SEASONS: Comes in various cute vivid solid colors for Casual & Sports. 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.