These Wheel House Designs cushioned socks are constructed out of soft terry loop, which protects feet and reduces the shock of impact. They are engineered to provide protection against blisters and designed to wick moisture away in order to keep feet dry. Acrylic, the most widely used fiber for athletic socks is soft, washes well and holds its shape. Cotton is widely preferred for softness. Nylon is used for strength and spandex is great for stretching power. Each pair is made with high quality lightweight soft cotton which has great stretching power wash after wash. Fits adult shoe size 9-12. Made in the U.S.A.