Heavy full-cushioning provides shock absorption, offers insulation against the elements, and supports under weighty loads. An arch brace holds the sock in place and adds additional support. Flat-knit toe seams keeps you comfortable. Knit in USA of 75% Merino Wool, 23% Nylon, 2% Elastane  WOW Technology in reinforced sole for maximum comfort and durability  3 x 1 ribbed cuff  Sizing clearly indicated on the sock  Flat knit toe seam  Elasticized arch brace