Adjustable, Adults size OSFM (One Size Fits Most )(Not responsible for sizing), has a Cloth hook & loop strap on the back. This is the Camo & Tan Zoom Fishing lures Cap New Unused Hat. (looks better than the picture) .
I had another ZOOM cap that I bought at Walmart 2 years ago. It was made in Indonesia... good quality and fabric. This one looks the same, but uses much thinner fabric... so it won't last long...and it's made where? In China! So, it's ok but I'll check closer next time to see where it was made.