These premium Merino Wool crew socks achieve a new level of super-soft feel. Exclusive nano-treatment technology combines with the natural feel and durability of premium merino wool for an all-day comfortable sock with excellent moisture wicking properties. Made of 75% Merino Wool, 15% Nylon, 10% Lycra®. Built to last and sure to be at the top of your sock drawer. M(5.5-9.5), L(10-12.5), XL(13-15).