The Outdoor Research Trad Dad Hat is a symbol of an experienced climber wanting to pass on knowledge to incoming youngsters. The hat is made from lightweight, breathable 100% cotton twill. The washed finish ensures vibrant color and peak fabric performance. The cap includes an embroidered logo just above the bill, and a low profile, curved brim. It is an adjustable fit design with a clasp back for an easy and custom fit. This particular hat is a one-size-fits-most design.