First, this is a beautifully designed hat. Very nice silhouette, casual shape, and the ribbon trim on the rim is a very nice touch. However, the hat that arrived is too large to fit. I wear a 7-3/8 size and most L-size hats are a perfect fit. This hat is an L but is easily a full size too large; it sits directly on top of my head and wobbles with enough room for a finger to fit under the crown on either side at the same time. Conner supplies a complimentary "just in case" envelope with the hat containing adhesive-backed liners to help fit a hat that may be a little too large; I placed these (tape not removed) inside the inner band, but they made little difference. It is still too large and wobbles freely.
I will not be replacing the hat for a smaller size, as I also found the hat to be uncomfortable, irrespective of size. The crown is VERY stiff (to be fair, this is pointed out in the video) and, IMO, is too heavy for wear on a hot day (I live in Texas). The discomfort is also because I am bald and the crown is too shallow, which means the top (even properly sized) sits against the top of my head. From experience, that can lead to scalp problems and unfortunate stains on top of the hat. Conner has other hats that I would be very happy to exchange for, if the returns section on the website allowed that as an option. This is obviously a well-made hat and I am disappointed that it won't work for me. I'll definitely try something else.