Stretchy enough to fit my head perfectly without being too snug. Great water resistance! Wore it on a pouring day underneath the hood of my jacket and the brim remained dry throughout my commute. Width is great too, it didn’t obstruct my view at all. Wore it on a warmer day under the sun and my head didnt feel like it was overheating at any point. Love this thing! Structure is unbeatable! I always keep the hat folded to the smallest size and tucked into my backpack’s mesh pocket, but the structure holds up! I just dont know what to do with the little pocket on its side, but it adds character to the fit