Under Armour Men's Ridge Reaper Base Crew 91% Polyester/9% Elastane Imported Exclusive Ridge Reaper camo is designed with coincidental disruption technology & an innovative "no background" color algorithm, blocking your prey's ability to see complete forms Smooth exterior makes layering easy & the ultra-soft internal grid traps heat for warmth without the weight Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes