Fits a big head comfortably for 2 hours.
926109
Great hat. It works well for what I need it for- dogwalking 2 hours per day. On the 3rd hour, it pinches a bit, but I won't deduct a star as it does what I need it to do for the length of time I'm in the sun. And I have a big head for a woman. Another great feature is that it won't ruin your hair like a regular cap would. Wish it came in pink.
1566374
I wear a size 7 & 3/4" hat size so my head is about the largest that would fit comfortably in this helmet.  While riding my bike for about 30 minutes a day for a week, I have had to issues or discomfort.  The straps are set to their maximum expansion yet the fit is still comfortable.
3315229
It fits comfortably on my big head. I measure as a Mens Large 7 3/8 (23" circumference) and it fits perfectly. I like the smaller brim, gives me enough sun protection without being huge. It definitely travels well, I packed in my suitcase and it comes out fine - it's soft and easy to store away without ruining its shape.
4406951
Used these for three hours this past weekend and they were very comfortable. Much better than the Peltor (sp?) I've been wearing for several years. I will say that they couldn't be any smaller as I have a large head. They fit comfortably but if they were just a bit smaller they wouldn't fit my head. One thing I did notice was the little window that shows you the call letters of the radio station fogged up pretty badly. No biggy but I just wanted to point that out. I live about 45-50 miles from most radio stations yet I was still able to pull in several stations, which was a pleasant surprise.
3063743
Great fit, comfortable head gear.  Good protection
4004244
It's warm and fits the skull nicely without feeling like a rubber band is wrapped around my forehead. When I first put it on I thought it was too tight for my medium-large head, but after wearing it for a few days the material broke in and it fits perfectly now. It's made from wool on the outside and synthetic material on the inside. So it will feel rough and scratchy on the wool side and soft on inside that will making contact with your head. It's a good beanie.
2403629
My head is on the large side and this cap fits and looks great.  Though I have yet to put it to the test in real cold weather, it is snug enough to stay put, yet very comfortable.  I wear it high on my head, just barely covering the tops of my ears, but fold it lower and pull it down and it will cover your ears if you need it to.
2405629
I have a big head so this was perfect. I plan on removing the Velcro and using cement glue to join them and make it a one piece helmet. Would totally buy again.
3011719
Works excellent. Bend the headband out to accommodate your larger-than-average head.
1530921
Comfortable for someone with a large head (wear a size 8 fitted), good sound quality. I did ding it a star because the audio in at the base of the left cup is some sort of proprietary locking 3mm aux, so I *have* to use their cable, which seems unnecessary. Definitely would recommend though.
3224294
Be aware, the brim on this hat is huge. I bought it for a canoe trip and it kept the entire tops of my shoulders in the shade. Fits as expected and was very comfortable.
2152539
Picked this hard hat over the others because it has a six point harness, which over time and on those long days is more comfortable.... the ratchet in the back is good for those days when you do a good job and get "the big head".. seriously, it will adjust better when you put off getting a haircut or are just plain sweating too much...or happen to need to work when the weather doesn't want you to and you want to put a skull cap underneath...  meets all the standards....
3366362
This is a great helmet for those of us with large heads.  It fits my perfectly.  I bought it to replace my Bell XL helmet that was in a crash.  This one is much more comfortable.
4659686
I bought this for my son for his medieval theme night.  It came well-fluffed, and looks like the picture.  The pupil is glued on felt (as an older review said), but it is well glued, I think it will take a significant amount of picking to get it off.  I have a big head, usually have to leave baseball caps unsnapped to fit, and this fit me comfortably
2309527
My head is 24.5" and it fits me too!  (Although I'm pretty much maxing it out.) It easily adjusts to different sizes with a spinning knob on the back.  Comfortable and cool.  And not too bad looking either.
3347943
The hat is looking light and is pretty much as described. Adjustable band to tighten to width of head. Big prim to keep the sun out.
3383776
I really like this hat. I purchased it for a cruise I'll be taking in about a month. I have never felt as if I have a large head, but this does feel a little tight on me. (Maybe I have a big head and didn't realize it?) I haven't worn it for any length of time, so I guess it's also possible it will stretch a bit. But I love the bendable brim, and how it can be styled in a few different ways!