I'm still waiting for it to break in, being a little tight, but I like the ventilation, and right now my bike doesn't have a wind screen, but the aerodynamics seem very good. I'm a long time Bell fan. I recently tried an HJC which after six months started falling apart. The Bell seems well built and has some pretty decent features. I ride every day, so if this helmet fails in any way, I'll make sure everybody knows. But for now, I'm pleased with the helmet.