Gmark Unisex Low Cut Running Socks are made of 40% Bamboo fiber, 40% Coolmax, 13% Polyester and 7% Spandex. Wonderful Gift Running Socks for family and friends on the upcoming festivals!Pull On closureUNIQUE DESIGN: Gmark Athletic Socks are specifically designed for professional athletes, especially for runners. Our Running Bamboo Fiber Socks use hand stitching seamless toe closure to avoid yarn chafing. The heel and toe areas are reinforced to maximize comfort and reduce friction. The elasticated cuffs prevent the Low Cut Cushioned Socks from sliding down and bunching up. The No Show Run Socks are Thin Padded to reduce bulk and protect your feet from jarring shocks meanwhile.SIZE & COLOR: Gmark Unisex Breathable Ankle Running Socks comes in US Standard Shoe Size. Female- Medium Size (Women): 5-7; Large Size (Women): 6-8; X-Large Size (Women): 7-9. Male- Medium Size (Men): 6-7.5; Large Size (Men): 7-8.5; X-Large Size (Men): 8-9.5. If you are between two shoe sizes we recommend you choose the small one. These Running Socks are available in five colors: Grey, Black, Blue, Rose Red and Light Purple, which is convenient for matching different types of shoes.HIGH PERFORMANCE: Being crafted in breathable fabric with superb technics, these ultra-lightweight Ankle Running Socks will keep your feet cool and comfortable even during strenuous exercise. High percentage of bamboo fiber provides added comfort. The soft cushioned heel and toe areas enhance the durability of our No Show Performance Sport Socks. Super soft and elastic to fit most sizes and can be worn in any season.MULTI PURPOSE: Gmark Unisex precision sewing Coolmax Sport Socks are perfect for any sport activity such as Running, Biking, Tennis, Cross Fit, Fitness, Triathlon, etc. The Outdoor Running Socks are also suitable for casual daily wear and can easily match any shoes especially sneakers, along with adding a fashion sense to your appearance. Great Low Cut Running Socks for a large variety of outdoor activities such as Hiking, Camping, Mountaineering, Backpacking, Trekking and so on.SUPERIOR CUSTOMER SERVICE: All Gmark products come with 100% MONEY BACK GUARANTEE. If our Outdoor Running Socks do not meet your expectation, you can return it to us within 30 DAYS along with your proof of purchase for a hassle-free full refund, exchange, or replacement. Feel free to contact us via e-mail for any issues encountered during purchase. We will get back to you within 24 HOURS and do our utmost to deliver a timely solution. Rest assured, ORDER NOW and feel the difference right away!