Red Kap Men's MIMIX™ Short Sleeve Work Shirt: Fabric: 4.25 oz. RipStop Fabric, lightweight and breathable, yet 75% stronger than typical poplin workwear MIMIX™ Panels: 3.8 oz. Performance Mesh, Polyester Blend: 65% polyester/35% cotton, permanent press Finish: Pre-cure durable press wrinkle resistant finish Closure: Seven-button front, including button at neck