This one weighs in at 980g. Once I start going back out on the longer rides, as opposed to buzzing about the city, I may look at a lighter one. remember in the 80's when necks would get broken because the uncovered foam would stick to the road? We have definately come a long way. The venting on mine is good up to around 30degrees celcius then it starts getting a little warm. Weren't those hairnets a scream, but they didn't wear hockey helmet then either....lol