Weight should be the least of your worries I have the giro g9 and I love it, it's not flashy or anything but it is very safe which is the most important thing, it's also only 100 which is pretty good for a safe helmate I would also recomend anything. Made by poc but it is very expensive, if you are doing heavy pow like in Alaska I would recommend getting something like the poc backcountry, it has a tracing system in it if you get stuck but the really cool thing is a new technology called MIPS I would recommend looking it up even if you don't have any intrest in buying it because it is so cool