85% Cotton/ 13.5% Polyester/ 1.5% Spandex Imported Machine or hand wash, use drying racks or tumble dry low recommended BUILD TO NON SLIP: Our no show socks will not fall apart, as the 5 non-slip silicones attached to the heels prevent slipping and bunching. BUILD TO NO SHOW: We design these no show socks to be hided inside the shoes, and they are invisible for most casual athletic shoes. CUSHIONED COMFORT: With the medium cushioning along the toe, sole, and heel, our no show socks not only provide warm and comfortable feeling, but also minimize rubbing, reduce soreness, and prevent blisters. BREATHABLE STRUCTURE: Our no show socks remain thin on insteps that optimize the airflow, giving them performance feature such as moisture wicking. USE & ENJOY: Our casual athletic socks are the good choice for both daily wearing and outdoor recreation! Enjoy our socks when you are walking, running, exercising, and traveling. We do our best to deliver the excellent customer service and we listen to customer feedback. Please do not hesitate to contact us or write your valuable reviews!