These are great boot socks for warmer weather. Cushioned with acrylic and cotton these will keep you comfortable on a long hike or a casual stroll. Model: F2020 Color: Grey/Navy (207) 65% Acrylic, 25% Cotton, 7% Stretch Nylon, 3% Spandex Grey Sock with Navy contrasting Toe, Heel, Cuff Softer Fabric and contents help wick moisture when Working/Hiking Stay-Put Leg and Top to keep socks up Wonder-Wick helps keep feet dry and comfortable Seamless Toe Closure This is a Unisex Sock This sock is great for use with sneakers or boots 1 Pair of Socks per package ----------------------------------------------------- SIZING: Medium - Men's 5-9.5 Shoe, Women's 6-10 Shoe Large - Men's 9-12 Shoe, Women's 10-13 X-Large - Men's 12-15 Shoes, Women's 13+