Several listings use “one size fits most.” Explicit circumferences shown include 18 in (45.5 cm) and 21 in (53 cm), suggesting a typical range of about 18–21 inches.
Many hats have shaped or flexible brims—listings mention flexible wire brims or wire in the brim edge for shaping—as well as notched or jagged brim edges and conical or pointed crown shapes.
Listings cover a range from children to adults, with examples including recommended ages of 3 years and up, kids in the 5–12 years range, and adult-sized hats.
Shaping is provided by wire in the brim or a flexible wire brim so you can bend the shape. Fit adjustment, where noted, is achieved with an internal hook-and-loop (Velcro) size-adjustment band in the lining.
Listings mention broadcloth linings and foam-backed crowns; at least one hat is described specifically as foam-backed coarse woven fabric rather than a plain lining.
