9.3 oz/ly (CA), 5.6 oz/sq yd (US), 189 gsm (EU). 100% anti-static performance polyester fleece. Moisture wicking. Breathable. YKK® zipper. Auto-lock zipper pull. 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.