Great helmet overall for looks and breathability. It fits me well; I was careful to measure my head per the instructions in the listing. My one gripe is that the helmet bag is pretty basic and cheap. I haven't tested it yet with a crash and I hope I never do, but I have no doubt it would perform its function well if required.I had found info stating that the Fly Kinetic is good for a "round" head profile. It is true. My son and I are both 2XL (53/54cm). My "intermediate oval" helmets crushed his ears and were loose at the brow. This helmet fits him properly. I didn't realize the difference until I tried this helmet on for myself; I could wobble it side-to-side on my head. For this size; it is true to sizing chart. Downward visor travel is limited. My son liked the "Rockstar" graphics. It was a good value and has good ventilation.I love this helmet. It's comfortable, it's sturdy, not too heavy, love the colors and uniqueness (very hard to find pink I like). I had tried asking what size I should get no one responded. I measured my head for it and got the size it suggested for my head size it is a little bit too big I feel. I put it on and shake my head, there's a slight jiggle to it. It doesn't come off easily but I have not been thrown off or crashed yet to know if it will come off then. If you like a snug fit go 1 size smaller if your head is on the smaller side of the measurement bracket for the sizes.Very nice helmet. My daughter loves it. Fit was perfect.We wanted a name brand helmet for my son. This fit the budget, and looks amazing. Much better quality than the off brands we purchased in the past.Super nice lightweight helmet, very nice design and well made. Not my first nor last Fly purchaseGood cheap helmet. Sizes run a little small, but will break in. Not as good finish and trim as the older model fly helmet in the same price range. Will spend a little more next time, wouldn't buy again just feels a little to cheap. It will work good in a UTV with a cage but I'd want something different for a ATV/DirtbikeI had to return this helmet and order another. The sizing chart Fly racing has is not accurate. Take your measurement, find your size on the chart, then order the next size up.Update: I ordered this helmet again in adult small for my 9 year old. The adult small is tight on her head. I'm debating sending this back a second time and getting a medium or large. My daughter measures 54-55cm. She'll have to break-in the padding or get a medium.