A 100% polyester front and 100% nylon mesh weave back make these hats super durable through regular wear and tear. They come in one size with an adjustable plastic snap closure: 22.8" (58cm). The cap's front has six rows of visor stitching. Pick any (or all) of the color variations and start customizing them with your original designs..: Material: 100% polyester foam front with 100% nylon mesh weave back.: One size fits most (22.8"/58cm).: Adjustable plastic snap closure.: Six row stitching on visor.: Please note: Creases on the hat will straighten out naturally once unpackaged and worn