50/50 recycled polyester/acrylic; Reflective yarn; 9" knit; Product traceability via QR code; 2 1/2 bottles were recycled for this hat.This product meets the following Sustainable Style subcategories:Sustainable Materials: Contains 50% recycled polyesterSustainable Manufacturing: This product is GRS certified.Socially Conscious Manufacturing: This product is made in a facility that is audited by BSCI/SMETA.