The Fostex baseball cap comes with an adjustable fastener for a perfect fit and a non-slip fit. It also has ventilation holes for a comfortable fit. Can be perfectly combined with jeans or cargo pants. Details about the Fostex Baseball Cap: Adjustable metal fastener Mouldable, reinforced shield Ventilation holes on the top of the head Material: 100% cotton Weight: approx. 100 g Colour: olive, checked Brand: Fostex