4 Degree Elite Fit System - for a dialled, performance-oriented fit with flex zone at ankle jointMen's specific fit - narrower heel and slimmer fitIndestructawool technology - features a patent-pending construction method for exceptional durability and comfortFull cushion on the entire sock - for added protection and warmthVirtually Seamless Toe - smoothed out toe seams for ultimate in-shoe fit and comfortHeight: 7" (inches)Fabric: 61% Merino Wool 23% Recycled Polyamide 14% Polyamide 2% Elastane