The Tracker Quarter Height and Tracker Crew Height socks are our “do everything” safari socks...ideal for both warm and cool to cold weather. Our Pro-Staff has extensively tested this sock over the past two seasons and has found it to be perfect for most conditions. Made with a blend of 33% fine Merino wool and 33% polypropylene for comfort and foot protection, plus 26% nylon, 5% elastic and 3% lycra for shape holding and “stay up” tenacity, the Tracker is a tough sock that will take repeated machine wash/dry cycles and won’t shrink or pill up like lesser socks. The Tracker features a full cushioned footbed, a tension-knitted arch support, Blister-Resister Technology plus a heavy duty heel and toe and double welt top. Fine Merino Wool and polypropylene wicks moisture away from your foot so well that even in warm to hot conditions your foot stays comfortably dry. . The Tracker is anti-microbial treated to fight bacteria and odor. If you know you are going to be putting on the miles, the Tracker is a great choice. Soft, yet tough, cool when it needs to be, warm when it should be. Khaki color only with Russell Moccasin-branded toe. Made in the USA from the finest Merino wool and polypropylene.