If you are wondering how they seal it is very good.
Some helmets are to close to the eyeport which force the goggles away from your face. This helmet doesn't. It has plenty of room for the goggle to "close" to your face.
This helmet is light kids. I currently have a Fly light helmet and this thing felt like it weighed half as much. (No I didn't weigh them. Someone on here will ask.)