6.3 oz/ly (CA), 3.8 oz/sq yd (US), 128 gsm (EU). 100% performance polyester interlock with wicking technology. No Bleed Fabric (NBF) created with a unique cationic dye process for easy printing. Elastic waistband with no drawstring. Breathable. 7” Inseam. Classic fit. Heather colours are not processed with cationic dye 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.