Snap closure ADJUSTABLE SIZING : PLEASE MEASURE YOUR HEAD IF UNSURE. Baseball cap sizes 6 5/8 to 7 5/8. Head sizes 20 to 24 inches or 51 to 70 centimeters. OUTDOOR DESIGN : Designed in the Great Outdoors of Columbia Falls, Montana near Glacier Park this Multicam black trucker hat represents the wilderness featuring the Larix Gear logo of a tamarack tree and mountain. BREATHABLE BACK : Premium mesh panels for breathability with solid snapback closure. CLASSIC RETRO STYLE : A 3.5 inch tall mid profile trucker that is not too short and not too tall. The visor can be shaped flat bill style or curved. SHIPPED IN BOX : Every Larix Gear trucker cap is joyfully packaged in a custom box at our shop in Columbia Falls, Montana.