Features Soft full length high-loft terry knit cushion for warm comfort in cool temperatures & those needing maximum warmth & cushioning Merino Wool & ultra quick-drying Coolmax® polyester offers maximum moisturewicking control to keep feet warm & dry Nylon-reinforced sole extends durability in high-abrasion areas Over-the calf length, dynamic 2x 1 nonslip cuff & stretch bands keeps sock in place