500g fully enclosed and has a small hoop to keep the fabric off your face when in it. It's Pertex so pretty windproof but you'll have some problem with moisture.
It's for riding bikes around the country, not climbing mountains. There will be 3000m mountains in the US but I won't be sleeping at the top of them and it will be June so hopefully not -30degC.
Ahh... Didn't realise you weren't actually mountaineering with it. Just low level or town parks?
Have a look at the Outdoor Research Helium.
500g fully enclosed and has a small hoop to keep the fabric off your face when in it. It's Pertex so pretty windproof but you'll have some problem with moisture.