For reference, my head is around 20 inches to 21 inches. I have straight, asian hair.
The product that arrived was exactly the same as the picture. Since the hat was flattened, it had a crease, but if you wear it, it really is not that noticeable.
I absolutely LOVE this hat. Super comfortable to wear and fits my style! The only gripe I have with this hat is really my fault. I have a small head, and on top of that my hair is really straight and smooth, so the hat does have the tendency to slide down. But nothing too severe. It doesn't slide down by itself to cover my eyes or anything like that. However, the brim is large enough so that if I wanted to shield my face from the sun, I could do that too.
Overall ,for the price and quality, I am very satisfied with this hat!