Kryptek Men's Hoplite Merino Wool Lightweight Short Sleeve Camo Highlander T-Shirt 95% Merino/5% Spandex Made in the USA or Imported Merino wool construction - 95% Merino and 5% Spandex Naturally antimicrobial and moisture-wicking Lightweight - 180GSM Sweat-wicking and highly breathable - will keep you warm, comfortable and dry in any weather Articulated (athletic) fit