Lightweight alpine rainjacket

integral designs event pullover
north face triumph anorak
arcteryx Alpha Sl pullover
Rab demand pullover

to name a few pullovers

i use an or helium …

OMM Cypher Smock
eVent
240 g

http://www.theomm.com/products?page=shop.product_details&flypage=flypage.tpl&product_id=14&category_id=2

Montane Spektr Smock
eVent
210 g

http://www.trailblazeroutdoors.co.uk/Products/CyberTill/Clothing/Hats-and-Gloves/Montane-Spektr-Smock

I have the OR helium as well. Sizing is a bit small. My size large weighs 6.8 oz and has been totally waterproof. It's not all that helmet compatible. It can be done but the hood sits so tightly over the helmet it constricts movement and I have to zip the zipper down partially. Usually I end up grabbing one of my heavier, better fitting shells.

I don't think this jacket was really designed for alpine/mountaineering use given the tight fit and lack of helmet compatibility. Annoying, because otherwise it would be perfect. Great for backpacking though!

helium is slim cut … youll need to size up if you want to layer a lot underneath …

that said im a solid med and i can fit a R1 type fleece, mb exl, dead bird atom lt under it a med helium fine

Just get the Integral Designs eVent pullover and be happy(er).

its not the lightest, but i have found that the REI kimtah jacket is under 16oz, very comfortable, and has kept me bone dry. i have found that alot of the lighter event jackets fit funny, and this jacket fits very well and allows layers underneath.

+1 on the Rab Demand eVent Pullover