BLACKHAWK! Men's LT2 Short Sleeve Tactical Shirt 65% Polyester 35% Cotton Imported Set-in sleeves with gusseted underarms for full range of motion Constructed of durable 5.1 oz. polyester/cotton ripstop DWR (Durable Water Repellent) treatment resists stains and dries quickly Concealed collar-stay buttons and anti-roll collar inserts Snap-down media player pocket on left sleeve with button hole for cord routing Set-in sleeves with gusseted underarms for full range of motion