Tested by athletes who require comfort and durability, this means a performance fit and no slipping, bunching or blisters. Here's to focusing on your run and not your feet. Arch support alleviates foot fatigue and bunching for long-running comfort with zero slippage. True seamless toe means for an ultra smooth, undetectable feel. Runners enjoy Merino Wool's ability to dry quickly and move excess heat and moisture away from feet. Lightweight socks breathe well, feel great, and regulate temperature during tough workouts. And as always, Darn Tough backs up its tough promise with an unconditional lifetime guarantee.  Height: Men's no show tab socks average 3.5 in. from heel to cuff - expect them to barely show above a running sneaker. Cushion: No Cushion-- no cushion Running socks offer the ultimate next-to-skin fit and ultralight comfort. Made in the USA. Content:52% Merino Wool 44% Nylon 4% Lycra Spandex

SELECT SIZE FROM DROP DOWN MENU ABOVE.

Medium: Men’s US: 8-9.5 (Women’s US: 10-11.5)/ UK: 7.5-9 / EU: 41/42.5

Large: Men’s US: 10-12 / UK: 9.5-11.5 / EU: 43-45.5

X-Large: Men’s US: 12.5-14.5 / UK: 12-14 / EU: 46-49.5

XX-Large:Men's US 15-17 /UK: 15-16  / EU: 50-53