These baseball caps are made and designed by Hempy's. They have a flat brim and the hat is adjustable by a small metal buckle on the back of the hat. These hats are made in the USA. Each hat contains 55% hemp and 45% cotton corduroy. The inside of these hats have a cotton band to make the fit of the hat more comfortable. These hats are one size fits all because the adjustable strap allows you to determine how tight the hat fits.