Darn Tough Unisex T4021 Tactical Boot Cushion Socks are a versatile option when duty calls. Shaft and light underfoot cushioning is just right in your boots, and the Socks are reinforced at the toes and supportive at the arch. The wool blend is naturally antimicrobial, sweat-wicking, and fast-drying. And these Socks come in a performance fit with True Seamless undetectable seam for smooth, stay-put wear. 62/36/2 merino wool/nylon/LYCRA spandex for all-season performance Moisture-wicking and fast-drying Naturally antimicrobial to repel bacteria and odor True Seamless undetectable seam fusiona |you simply won't feel it Fine-gauge knitting for durability without excess bulk Shaft and light underfoot cushioning Elastic arch support Reinforced toe Boot height is at calf, a bit higher than crew sock height Performance fit won't slip or bunchSizing Details: Extra-small: Fits Women's shoe sizes 4.5-7 Small: Fits Men's shoe sizes 5.5-7.5, Women's 7.5-9.5 Medium: Fits Men's shoe sizes 8-9.5, Women's 10-11.5 Large: Fits Men's shoe sizes 10-12, Women's 12-14 XL: Fits Men's shoe sizes 12.5-14.5 2XL: Fits Men's shoe sizes 15-17 Order today!