This is a New Era golf cap, specifically designed for golf. It's a 39THIRTY, designed to fit snugly on the head. I purchased a M/L size, but it didn't fit me, so I'm selling it. It looks almost new, but please be aware that it is a used item, having been worn only once. Product Number: 14524725 Product Name: NEW ERA GOLF 39THIRTY Diamond Era Size: M/L (57.7-60.6cm)