Most of the caps use cotton, shown in either knit or woven constructions. Trucker-style variants often combine a cotton twill front with a structured mesh back.
Crown heights commonly fall between about 3 and 4 inches, while brim (bill) lengths are roughly 2.75 to 2.88 inches.
Most listings recommend hand washing. Some specify spot-clean only, and others advise line drying or laying the cap flat to dry.
Many caps include breathability features such as a structured mesh back, reinforced ventilation eyelets, and breathable all-season weaves. Absorbent cotton sweatbands are also common for added comfort.
Closures are typically adjustable. The most common types listed are back snaps (snapback) and hook-and-loop (Velcro) straps.
Many items are labeled as one-size or “Adult General Sizing” and rely on adjustable closures—such as back snaps or hook-and-loop straps—to fit most adult head sizes.
The results list two common cotton constructions: lightweight knit cotton and midweight woven cotton.