The Magpul Equipped Trucker is a classic structured"" six-panel trucker-style hat. It's got a mesh back and a mid-crown design"" so the brim rests just above your brow and is comfortable all day. There's no button on the top of the hat"" making it great for use with over the head hearing protection. One size fits most with its adjustable snapback design"" hat sizes 7 - 7 3/4.