Tall enough for any Baffin boot, the NORTH SOCK is specifically designed for use with Baffin Inner Boot Systems. With reinforced impact areas and arch and ankle support for defined fit and anti-fatigue, the NORTH SOCK boasts calculated blends of natural and synthetic fibers to offer maximum performance.TECHNOLOGYFeaturesFine knit, super-soft, Merino wool blend that keeps feet warm, dry, and comfortable year roundMerino wool blend provides warmth and natural temperature control year-roundDouble comfort, top design to protect legs from frictionFull cushion sole provides shock absorption and offers better insulationReinforced impact areas plus arch and ankle support for defined fit and anti-fatigueErgonomically shaped construction for both feet Material60% Wool20% Polypropylene17% Polyamide3% ElastaneSize MediumMen Shoe Size 6-9Women Shoe Size8-10Size LargeMen Shoe Size 10-13Women Shoe Size 11