Smooth woven fabric with built-in stretch for greater mobility UPF 30 protects your skin from the sun's harmful rays Stain release materials keep blood, guts & dirt from soaking in Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Mesh back vent construction for added breathability Secure chest pockets with right-side knife pocket Roll-up sleeve loop & button 2XL NWT