7.2 oz/ly (CA), 4.3 oz/sq yd (US), 146 gsm (EU). 100% Dri-FIT polyester with moisture management technology. Rib knit collar. 3-button placket. Rolled forward shoulder seams. Nike embossed pearlized buttons. Double needle hemmed bottom. Contrast embroidered Swoosh logo at left sleeve. Breathable. Tagless. Classic fit. Due to the nature of polyester, special care must be taken throughout the decoration process. Please refer to product size spec PDF file for more details.