This blink-and-you&&';;ll-miss-me, ultra-lightweight sock is knit with CoolmaxA(R) yarn that chills out when your run heats up. Featuring a silky, chafe-eliminating cuff, high-performance flex zones and supportive fit that are in it all the way on all the days. Height: No Show TabWeight: Ultra-LightweightPair with: Running shoes, trail runners, athletic sneakers Product Details: Men&';s no show tab socks average 3.5 in. from heel to cuff - expect them to barely show above a running sneaker. A performance fit means no slipping, no bunching, no blisters. Here&';s to focusing on your run and not your feet. Heel tabs offer extra protection behind the heel from friction and keep debris at bay. Arch support alleviates foot fatigue and bunching for long-running comfort with zero slippage. Synthetic COOLMAXA(R) yarns are vegan and help feet stay cool and dry while running. Ultra-lightweight, low-profile CoolmaxA(R) socks keep your feet in their comfort zone for miles. Vegan friendly. The "still" in Still Made in Vermont, USA is personal. We knit all our socks at our VT-based Mills - we can&';t imagine it any other way. Unconditionally Guaranteed for Life - if these aren&&';;t the longest lasting socks you&&';;ve ever owned, return them for another pair. Cushion Details: a Soft cushioning underfoot and in the unique heel tab are engineered to improve rebound and provide personal best comfort. Materials & Care: a Machine wash in warm water on gentle cycle with socks inside-out. Do not bleach. Tumble dry on low or hang dry. Do not dry clean. You can learn more about. Materials: 48% Nylon 47% Coolmax Polyester 5% Lycra Spandex Size Chart: Sock Size Shoe Size Men Men US Women US Euro UK XS 2.5 - 5 4.5 - 7 35 - 37.5 2.5 - 4.5 S 5.5 - 7.5 7.5 - 9.5 38 - 40.4 5-7 M 8 - 9.5 10 - 11.5 41 - 42.5 7.5 - 9 L 12-Oct 14-Dec 43 - 45.5 9.5 - 11.5 XL 12.5 - 14.5 - 46 - 49.5 14-Dec XXL 15 - 17 - 50 - 53 15 - 16