RibbedTee Men's Retro Fit Crew Neck Cotton-Poly Short Sleeve Undershirt 1-Pack, White 50% Polyester / 50% Cotton Made in USA COMFORTABLE: Extremely soft and extra lightweight, made with a semi-sheer, loose knit stretch jersey fabric making every shirt buttery soft SWEAT DEFENSE: Protects outer shirts from sweat stains, moisture absorbing yarns wick away sweat to keep you cool and dry OPTIMIZED FIT: With a high collar crew neck to wear under collared shirts, long to stay tucked, tag free PROVEN: Voted Esquire's Favorite Non-Cotton Undershirt and Valets Favorite Summer Shirt Relaxed Fit Knit Jersey, 50% Combed Cotton, 50% Polyester. Made in the USA.