4.4 Oz. 95/5 Polyester/Spandex Closed-Hole Mesh With Stay-Cool Wicking Technology. OGIO Heat Transfer Label For Tag-Free Comfort. Flat Knit Collar. 4-Button Placket. Woven OGIO Badge At Left Side Seam. Set-In, Open Hem Sleeves. Textured O Heat Transfer On Left Sleeve. Diesel Grey O Button Detail. A Sleek, Breathable And Ultra-Urban Style That Evokes Function In Every Detail.