A medium weight quarter sock with superb comfort and durability on any trail; High performance Isowool; Wick Dry; Health Systems keeps feet dry and comfortable; Easy relaxed top for stay up comfort; Lycra; knit construction throughout for a memory fi t; Cushioned sole with mesh knit side channels for airfl ow to move moisture; Reinforced heel and toe areas for extended wear; Lin-toe; seams mean no irritation at toes; 33% polypropylene, 33% nylon, 26% wool, 6% merino wool, 2% Lycra; spandex; XL basil khaki crew.