From Ariat, this shirt features: Hidden collar buttons Short sleeves Button-front closure Zippered front pockets Breathable mesh yoke Hidden sunglasses cloth Breathable TEK woven fabric Underarm gusset for ease of movement AriatTEK® Heat Series technology keeps you cool VenTEK technology with body mapping to enables air flow and regular body temperature Sun protection fabric provides protection from ultraviolet rays Moisture Movement Technology wicks moisture away from the skin Greater arm mobility underarm guesses for maximum range of motion Breathable TEK woven fabric Polyester Machine wash/tumble dry Imported.