So, I bought this as an alternate race day helmet. I'm normally an intermediate oval shape, and although this is long oval, it does fit my head well. Slthough it's tight in the cheeks (mostly between my cheeks and my ears). I wore the helmet around the house a couple days, and almost returned it, but decided to take a ride in it to see if that would help the break in process. Almost as soon as I started riding, the helmet felt great! It's weird.Visibility is amazing! Better than my Arai RX-Q, and my Shoei RF-1200. Noise levels are up there, though. I do suggest wearing ear plugs. Again, it is a race helmet. Not a lot of creature comforts. And, there's a vent lever on the inside of the helmet, at the chin guard, that I have no idea what it activates. The vents seem like they're always open.Also, mine had a manufactur date of 2016. So, I can only race with it for 2 years before it needs replacing (but, that's why I bought the Shoei as the primary race helmet).It's a great value for a carbon fiber helmet. They also have professional racers use these, so don't think you're getting offbrand crap.Mostly, giving it 4 stars because of the strange vent lever, and the manufacture date. If it was a 2018/2019 date, I'd give 5 stars.This is a very feature packed helmet for the money, It was listed at 189.99USD when purchased - the other models listed at 399.99USD.It is light, graphics are clean and sharp. Resin finish is smooth and consistent.Visor hinge is only 3 position, crack/half/full - honestly when do you really need 12 different adjustment points for the visor?Ventilation is great when the chin flap is removed, the chin flap will be useful during the crisper times of year to keep the cold out, maybe wind noise too. Ether way the neck and chin seal is true to fit.Speaking of fitment, the mid cheek and center upper forehead runs tight as another reviewer claimed. I'm a long/intermediate with a wide high cheek and sloped forehead with a strong brow line. With break in and a little persuasion the pressure points the foam presents can be adjusted. CompareThe chin bar is nicely lined with dense foam.Visor is thick and ready for both tear offs and pinlock.It is loud, and snug around the ears as well, do not expect to put a bluetooth in this one.Very good bang for your buckFor reference, i wear a HJC XL, and ordered a XL of the arrow carbon model.Well first off let .e say for the price I was skeptical... But this thing just saved my life!!!! I was like an idiot doing track riding on the roads... Got my breaks nice and hot and then came over a hill and Bam! There's a deer! The deer moved but I grabbed a handful of break... Felt the back tire come up a little then just grabbed and over I went! It's estimated I was doing 120-140 mph when I went over.... I landed directly on my face and the bike came right behind me driving me into the tar... Landing on my back... This helmet did it's job!!! Literally saved my life.... I have a broken femur bone, a broken heel bone three broken vertebrates a broken scapula and 4 broken ribs on my backside.... and all I have on my head is a little knot in the back we're apparently the helmet jammed into my head but the thing stood up to the worst test anyone would ever do! If you guys at LS2 want to examine your helmet for research I'd be more than happy to send you it and I will definitely be buying the same model as soon as I'm out of the hospital lolHad this helmet for about 6 months. Not a very quiet helmet but very light and protected my head when I crashed this past weekend. It is an absolutely gorgeous hat. My only real issues were the bottom neck roll ripped at the seems but I sewed it up...worth it. That same neck rolled started cracking due to the sweat and the fact that that area is a pleather type material. Either way, she did her job when it really counted, and I am buying another one, so that says something.Didn't try it on yet ... but looks awesome !Will come back with a full review after I will wear it riding my bike .Yesterday try the helmet ! The measurement size don't feet. I have 55 cm , that is S size ... ant the helmet is much smaller looks awesome! Will come back with a full review after ...product in perfect condition. very very very good. very good helmet quality. very light. I recommend!! Thanks.