100% rPet Twill. Made From Post Consumer Recycled Materials. Recycled Polyester (rPET) is Obtained By Melting Down Existing Plastic Bottles And Other Material Sources To Create New Polyester Fiber. Pro-Stitching On Front Pre-Curved Visor. Double Layer Sweatband. Sweatband And Lining Are Not rPET. Adjustable Self-Material Strap With Hook And Loop Closure.