SIZE-HIGH ELASTICITY: US women 7-12.5, US Men 6-12; Bonangel ankle cotton athletic socks are made of 40% cotton 60% polyester, providing maximum comfortable and perfect fit. The Breathable mesh ventilation design and Moisture wicking Management of our quarter running socks help to keep your feet cool and dry while doing exercises. PREMIUM COMFORTABLE FIT: Our quarter running socks are engineered with targeted arch compression, adding support and stability to reduce foot fatigue, wrapping around the feet to keep your sock from slipping and prevent bunching. The seamless toe provides unsurpassed comfort by reducing abrasion and preventing blisters. CUSHION DESIGN: Bonangel quarter cotton running socks feature a cushioned sole to enhance performance fit by eliminating blisters and providing light shock absorption. The reinforced heel and toe also provide unsurpassed comfort and help keep the socks from slipping. EVERYDAY USE&OUTDOOR ACTIVITIES: These ankle hiking running socks could be coordinate with variety of conditions resulting in moderate to significant stress on the foot, perfectly wear as running socks, hiking socks, work socks, tennis socks, basketball socks and so on. Also a best gift for families, friends and colleagues for Birthday, Anniversary and Holidays. SATISFACTION GUARANTEE: Bonangel stands behind the quality of our socks and wants you to have a great experience with every product we make. If at any point you are unsatisfied with one of our products, just simply return it to Amazon for a replacement or a full refund within 30 days.