Men's Helium II Jacket™

Style# 55230OR

Built for flash-storm protection, the 100% waterproof, super-breathable Helium II weighs an incredibly light 6.4 ounces. An ultra-compressible piece you'll never leave behind, it's so light and packs down so small you'll forget it's clipped to your harness until you throw it on to ward off a sudden mid-route downpour. Compressible to the size of a granola bar, the Helium II keeps you completely protected from unfriendly weather on the trail but doesn't waste space or add more than a feather's-worth of weight to your pack.
Standard Fit


Hot Sauce
Typhoon/Hot Sauce




  • Waterproof
  • Breathable
  • Lightweight
  • Fully Seam-Taped
  • YKK® AquaGuard® Center Front Zipper
  • Fully Adjustable Hood
  • Single-Separating Front Zipper
  • Zippered Napoleon Pocket
  • Internal Pocket Doubles as Stuff Sack
  • Carabiner Loop
  • Elastic Cuffs
  • Drawcord Hem


Fit: Standard Fit

Fabric: Pertex® Shield+ 2.5L, 100% nylon 30D ripstop

CENTER BACK LENGTH: 28½” / 72 cm (L)

Avg. Weight (oz./g): 6.4oz / 180g (L)

Customer Reviews

Just shy of perfect (Review by Hector)

Great build and shockingly breathable. I usually don't go for jackets that lack pit zips but wanted a contingency shell, you know, for days when there's a 40% chance of rain and you grew up in the Northwest so you learned to never leave home without a rain jacket. For that purpose (day hikes, mountain biking, and kicking around London) this is exactly the jacket I was looking for.

I question the decision to add a purpose-built stuff pocket, offset on the back hem. It's a total nitpick, but the Velcro closure isn't robust enough to contain the stuffed jacket through much jostling. As a pocket it's in a weird position and not secure enough for much more than a cliff bar. I'd love to hear from the design team why they chose to go with this extra pocket rather than shaving another few grams by just using a reversible zipper on the chest pocket instead.

(Posted on 9/22/15)

Great for surprises (Review by JE)

Just used the Helium for a 2 week series of outdoor excursions in Iceland. I decided on this shell for the trip because of its lightness and packability, and also because Iceland is known for wind and drizzle/ mist that tends to just keep everything moist. Well, unfortunately for me, this year was a particularly wet and cold summer, and there were weather advisories for all highland regions pretty much throughout. On our first day backpacking, we hiked up quite a bit of elevation, and ended up hiking for hours across snowfield in a hard driving rain. This shell just did not cut it for that kind of weather. I don't think it leaked, but I know the face fabric wet out, and that likely meant little to no moisture moved through the membrane. When I arrived at camp hours later, I was soaked -- through my thin micro-check fleece shirt, right down to my underwear layer. In the following days, whenever the rain came in with a vengeance, I'd wear my thin PrimaLoft (Gold) jacket underneath and this not only kept the moisture largely off me, but also dried super quick when it did get a bit wet.

I originally bought this shell for backpacking in the Canadian Rockies, where I've backpacked for years and years carrying heavier rain gear which basically just sat in my pack or maybe got pulled out at night if I got cold. And for this kind of application, for the surprise rainstorm, or thundershower, this shell is awesome and I continue to use it happily. But for all day, relentless, driving rain, unfortunately this is not the shell to take -- nor is it advertised as such. I was, perhaps too optimistically, hoping it would be. So I'm writing this review for anyone else who might've had the same thoughts.

The only real complaint I have is with the zippers, which are very stiff in contrast to the fabric. My front zip doesn't always open or close easily -- and with cold, wet hands it sucks.

TL;DR: Great (as advertised, for flash storms) but inadequate for all-day driving rain.

(Posted on 9/16/15)

very nice (Review by Mark)

Very nice and light. I normally wear a large in everything at OR but based off of others advice I went with the XL and it fits perfect. I am about 5' 11" and 190 pounds.

(Posted on 6/2/15)

Great emergency storm protection (Review by Gavin)

I use this shell primarily when cycling or backpacking. It's ability to pack down so small and yet offer relieble protection makes it great for pursuits where weight and space are limited. Has saved me in the Uintas and Sawtooths backpacking when caught in rain miles from camp. Great to throw in a day pack as well for insurance. On one occasion I was exposed in non-stop rain for a few hours and when I crawled into the tent I was still dry. Great emergency storm protection.

(Posted on 11/23/14)

update: hailstorm proof (Review by Wellnesscoach)

On a ride last weekend I got caught in a violent thunderstorm complete with driven marble sized hail and torrential rain. I actually had to take cover behind a guardrail to keep my ears and neck from being taken out by the hail as my helmet was at least protecting my head. This baby held up perfectly, including the hood which took a constant pounding by hailstones for at least 10 minutes until the front passed. Unbelievable protection for such a lightweight garment. Can't say enough about this jacket.

(Posted on 9/29/14)

This jacket is awesome! (Review by Travis)

I love this jacket! It is a great for hiking and climbing when you need just a little rain and wind protection. Has been worth every penny!

(Posted on 8/16/14)

Perfect when you need low-bulk rain protection (Review by Brendan)

This thing lives in the bottom of my cragging pack, and my mountain bike pack, for when I need a rain layer just in case. Also a great wind layer for downhills on the MTB or trail running after you've climbed up a big hill and need a little protection from a cool breeze on the way down.

(Posted on 6/8/14)

Sweet jacket!! (Review by Blake)

This thing is PERFECT! I wanted a waterproof/ windbreaker that wouldn't take up any room in the pack and would be featherweight on the harness. The Helium 2 is IT! I am more than stoked on this layer. I always take it up with me now. I got caught on the wall when the rain hit, BAM! Helium 2 to the rescue, I stayed super dry. An unbelievable wind breaker, the Helium 2 has kept me warm in the gnarliest of winds so far. I seriously don't feel it on the harness but still seems to be built tough. I have wormed up some chossy chimneys wearing this jacket and it has survived unscathed! I mean, that never happens...I usually DESTROY gear. Helium 2 gets my highest praise, OUTDOOR RESEARCH RULES!

(Posted on 6/8/14)

sausage (Review by marinesoup)

I love everything about this item but the sizing.
The only reason it didn't get 5 stars is that their sizing is small.
I take XL and anything thus far has fit perfectly. I can't remember a time that that it was too small (if anything it was bigger)
I bought the XL and it is shall we say….snug.
My suggestion if you want to take it, is to buy 1 size larger than you normally take so you have a bit of room to move. I kinda felt like a big burrito.
Other than that it what it says it is, a very light breathable rain jacket.

(Posted on 5/1/14)

Men's Helium II Jacket (Review by CB)

This is a great jacket to have in case you get into some weather. It's small enough to travel in my backpack at all times and has been strong enough every time I've needed it. The jacket is minimal. The fabric is quiet and lightweight. I have yet to wear it in heavy prolonged showers but it's done the trick so far. I'm 5'11', 160 and was between the Medium and Large. Got the Large and glad I did. It doesn't feel too baggy if there isn't much under it but has room for layers.

(Posted on 4/15/14)

Fantastic protection for lightweight pursuits (Review by Chris Simmons, IFMGA Mountain Guide and OR Grassroots Athlete)

True rain gear pieces - really waterproof, not just water resistant like a soft shell - is really a one-piece item. It just doesn't breath or provide insulation like a softshell. So I pack it, because if its really raining I really need it, but I don't like to pack it, because it just adds weight and bulk to my pack for the 60-80% of the time I don't need it at all. That's where the Helium II fits in - since this only comes out if its really wet or really windy, I don't need pockets. I don't need heavy fabric, and I don't need pit zips and reinforced whatevers. I need waterproof, and I need it to pack up small. Perfect for me on long trail runs or climbing days with iffy skies, or those midsummer alpine and backpacking trips for when I need a "just in case" piece of rain gear.

(Posted on 3/19/14)

Best Rain jacket I have ever used (Review by Trail Swag)

I own and love an original Helium jacket, and decided to try the new Helium II jacket. It is now my new favourite as it is even lighter, breathes a little better, and is the go-to jacket for all of my outdoor adventures. I wouldn't think twice about bringing it along in my hiking day-pack, or camping backpack. My original Helium jack is now my loaner for friends who forgot to bring their own jacket.

(Posted on 12/27/13)

goes on the bike and in the pack everytime (Review by wellnesscoach)

This is so lightweight and stowable (in the handy pocket) you don't even notice you have it. Bombproof on a recent run in heavy chilly rain and when an unexpected front moved in during a recent ride. A perfect garment in this category. Trim fit is as advertised--get one size larger if you are planning to wear anything thick underneath.

(Posted on 11/25/13)

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