The socks are made using a proprietary blend of yarns specially sourced by Tribe Socks. They are 200 needle knit crew with half terry cushioned button for extra support and comfort. They are a true one size fits most, and are available up to size 12 male (U.S.). They have an unprecedented amount of stretch with durable print quality. .: 75% Spun Polyester 22% Nylon 3% Elastane .: 200 needle.: One size fits all (W's size 5 US up to M's size 12 US) .: Cushioned bottoms