Our wool-blend socks breathe and move sweat away from your skin for all-day comfort in your boots. The soft, pill-resistant knit features a synthetic and spandex blend for a long-wearing durability and a lasting fit. They feature reinforced heels and toes with cushioning in all the right places. The Thinline features the lowest-profile knit we offer. 52% Merino wool, 22% Acrylic, 24% Nylon, 2% Spandex 2 Year Limited Warranty WEIGHT: Light FACE YARN: Wool blend face yarn provides warmth and wicks away moisture LINING YARN: Nylon/Spandex blend for comfort, abrasion resistance and strength DURABILITY: Reinforced heel, toe, and arch for durability COMPRESSION ZONES: Instep, ankle, and upper cuff compression zones CUSHIONING: Light cushioning in foot bed, and upper