Brand New adult one size fits most, Joe Biden I'D SNIFF THAT Crew Retro Trucker Hat with adjustable closure in the rear. Foam Hat with poly mesh back. CAP FEATURES: 100% Polyester Front 100% Nylon Mesh Back 5-panel cap Seamless Foam Front Panel with Lining 8 Rows Stitching on Visor Matching Fabric Under visor Adjustable Plastic Snap