4.1 oz./yd²/139 gsm (US), 6.8 oz./L yd (CA), 100% polyester piquéMoisture-wicking performanceUPF 15-39 protection Anti-microbial propertiesMatching flat-knit collarChest pocketThree-button placketSide slitsHeat-seal labelResponsible Supplier: this product was made in a facility that is FLA certified.