This helmet is very comfortable, light and the build quality is pretty decent. My measurement was exactly 24 inches, so I decided to get a large instead of the XL ( my half helmet is a XL and fits perfect ). The description indicates that the sizing does run big and they are correct. The large size fits me perfect.The wind noise is fine up to 70 miles per hour...not sure how it is beyond that as my motorcycle ( 2022 Royal Enfield 350 classic ) tops out at that speed.The helmet does have a loud whistle when the visor is UP. I noticed that it comes from the gap between the visor and the helmet...so...I am going to place a strip of thin weatherstripping to fill in the gap and see if that fixes it....I'll update the review later.I ordered the rootbeer brown and the paint/color are super nice.Overall I am very happy with the helmet and would order one again....especially if its on sale.