FeaturesReliaWool technology - featured in high impact areas, this patented construction improves durability in the heel and toe.Four Degree Elite Fit System - a blend of two elastics and bi-elastic fit bands increase flex, stretch and recovery throughout the foot for all-sport versatility.Strategically placed mesh ventilation zones - these effectively manage temperature and moisture.Virtually seamless toe - for chafe-free comfort.200 needle construction - provides high-density cushioning while maintaining light weight.Merino wool, nylon and elastane - this versatile construction offers impressive stretch and comfort outdoors.Knitted In USA with Imported Yarn: 51% Merino Wool, 46% Nylon, 3% ElastaneRecommended activity - running / walking