It does have some turbulence coming from the chin area.-- I purchased a chin air dam, which is this one https://www.amazon.com/gp/product/B0037NUC2SIt popped right on and it works amazingly.-- I also ordered a dark lens because this is hard to wear with sunglasses. It does not have a cut-out for glasses.-- It works well with my blue tooth set-- I don't think it's antibacterial inside. I spray Lysol once in a while and clean it.-- The fog guard in the front popped out in short order. I put it back and used some instant glue along the edge of it and the issue is now resolved.-- The interior is not as quiet as I hoped. I wear ear plugs to reduce wind noise.-- The weight is low. The size for my larger head is perfect.I needed a temporary (single use) Snell 2015 Helmet. I didn't want to spend a lot on a helmet that might only get used once. I read good reviews, so with my fingers crossed I took a chance. This helmet is WAYYY beyond the quality I was expecting. Fit is great. It's very comfortable. Nothing about it seems cheap. I haven't crash tested it of course, but it seems sturdy. Some cheaper helmets you can feel the chin guard flex. This one seems like it could take a hit.Bottom line, I bought it for a single use, and will most likely put off a permanent upgrade, as this helmet is so good.Bought this to replace an aged Snell2010 autocross helmet. I wanted yellow to match the car, and this seemed decent for the price.It's not a bad helmet, but it's definitely not a great helmet. I've gone thru 4 helmets via motorcycles and autocross, and I don't think I'll be buying this one again. I've got a pricey Shoei Neotech, a Scorpion, and my last autocross helmet was an HJC. All were mediums and fit fine. This fits a little small so they might possibly be sized a hair under.The top cushion towards your brow tends to pop out occasionally. It doesn't affect my field of view but I do see it when sitting in the car and looking in the rear view mirror.If it had a better fit I'd give it 4 stars. Overall it's not bad, but don't expect it anything spectacular. I'd recommend it for someone that wants to get into karting or autocross and doesn't want to break the bank. But I wouldn't recommend it for a motorcycle. Personally I want my bike helmets to fit perfect and never give me any issues or squeeze my head during trips.I bought this helmet in the same size (medium) I've always worn, and it doesn't sit all the way down on the top of my head. Other than that it seems fine.Great basic helmet that meets my local drag-strip safety requirements, snell2015. Seems built very well. I measure a perfect M, but this bad boy is snug! I thing the foam will loosen up a bit, so I will not be exchanging it for a L, but if youre right on the edge, Id recommend sizing up.Solid quality feeling materials, I found this on a search for 2015 Snell rated full face helmets. This was the least expensive full face 2015 Snell rated helmet with a solid non-pattern color I could find. It fits solidly, I don't notice any air leaks at the visor, and the vents all work and felt solid. Good buy!Overall a good fit. The reason for 4 stars is that the Styrofoam causes some mildly uncomfortable pressure against my forehead. (The shape of my head is that of the general public, not too oblong and not too circular.) Going up a size would result in the helmet being too loose. Other than the aforementioned minor discomfort, this is a great SNELL 2016 certified helmet.After thought: while it does have 5 vents (if recalled correctly) there is some quick fogging on cooler days.I wish the helmet would have fit, measured head and ordered medium but it was clearly too small. Had to send it back. However, packing, packaging, appearance of product was very nice. Return was pretty painless too.