Most listings use a snapback (back snap) closure, are adjustable, and are listed under 'Adult General Sizing.'
These hats are made from polyester; several listings specifically state 100% polyester.
Brim (visor) length is listed at 2.5 inches, and crown height is given at about 3 to 3.5 inches across the listings.
Care instructions list hand wash only, then line dry or lay flat to dry.
Hats feature team logos, side flag detailing, and driver-specific embroidery such as a driver number and a country flag.
Listings note a lightweight fabric and adjustable sizing; care instructions repeat hand wash and line dry or lay flat to dry.