Fabric: Known for superior breathability these polos not only wick moisture they fight odor. 3.9-ounce 100% polyesterTag-free label Flat knit collar 5-button placket Dyed-to-match buttons Double-needle sleeves and hem Set-in sleeves with raglan accent Princess seams in front and back*Due to the nature of 100% polyester performance fabrics special care must be taken throughout the screen printing process.