Most listings state the caps are made from either 100% cotton or polyester fabrics — both fiber types commonly appear across available descriptions.
Common icons include classic power-ups such as mushrooms, stars, and fire flowers; some designs also feature other game elements like brick blocks.
Care guidance varies by listing: some specify machine wash and tumble dry, while others recommend hand washing and laying flat to dry to preserve shape and decoration.
Common colorways include black and white-and-red retro combinations; examples often note black bases and white-and-red styling.
Several descriptions highlight lightweight, breathable fabrics and stitched ventilation eyelets on the crown to help air circulate and improve comfort.
Both appear in listings: many hats use embroidered front patches or artwork, while others feature printed elements on the brim or all-over printed designs.
Some listings explicitly state the caps are officially licensed Mario merchandise; at least one description uses language indicating genuine or officially licensed status.