Smartwool Men's Hike Medium Crew Socks This all-purpose sock was designed for rugged day hikes or moderate backpacking. An arch brace holds the sock in place and adds additional support. A flat-knit toe seam keeps you comfortable. Features: Sock Height: Crew Sizing clearly indicated on the sock Flat knit toe seam Elasticized arch brace Made in USA of Imported Yarn: 66% Merino Wool, 33% Nylon, 1% Elastane