100% recycled polyester; 8 ½” knit; Product traceability via QR code; 2 bottles were recycled for this hat.This product meets the following Sustainable Style subcategories:Sustainable Materials: Contains 100% recycled polyesterSustainable Manufacturing: This product is GRS certified.Socially Conscious Manufacturing: This product is made in a facility that is audited by BSCI/SMETA.