This is a great lightweight piece to throw in your pack if there's a chance of rain, but you don't want to waste the space or weight bringing your burly rain gear. I found it to be great for spring bike commuting and around town use. This would be a great emergency rain shell for those of us in the generally dry western ranges that often have afternoon thunderstorms and rain showers. I did find myself wishing it was an inch or two longer, but I'm relatively tall and wear a medium, so this won't be an issue for many folks.

Am looking forward to putting some serious miles on this jacket, Tested it a few times and the water-proofing is sweet, breathability is sub-par but for the weight of this thing, I can't complain at all. Will update this review after 2652+ miles along the Pacific Crest Trail. It does run a little small so I sized up so I can layer and have the sleeves fit my monkey arms. But as of now, I love this jacket.

Greatest of all time. I have loved this windbreaker! Its been great to have fishing and backpacking. Super lightweight and can pack up super small. It's been super great to have.

Used this jacket for a weekend filming a bike race in Comfort, Texas. It turned out to be perfect testing conditions for this piece. Very high winds and gusts on Day 1 and light rain in the evenings. This ended up being the PERFECT piece--highly breathable for carrying around my 40lb+ pack on singletrack, it is crazy lightweight and doesn't feel muggy in warmer weather. Also crazy packable when i needed to stash it. This jacket definitely made my wishlist as the perfect emergency layer for backpacking, and even a great everyday rain jacket since it's waterproof unlike some other "water resistant" layers in this category.

I absolutely love this jacket for hiking! It's insanely light weight while still being incredibly durable!

The downfall of this jacket is the zipper. Since I got the jacket the zipper has always been tough to use. I took it off the other day and the zipper guide came off and is stuck in the zipper mechanism.

Used on a sail boat and keeps me dry!

I got this for my dad as a birthday gift. He lives in Seattle, and the stereotype is true, it rains a lot. My dad told me he was in need of a rain jacket and that he also needed a new Patagonia Houdini (which is not waterproof). With this jacket I was able to get him everything he wanted in one jacket! This jacket also functions as a Houdini, meaning it can conveniently fold into its own pocket. So far my dad had been super satisfied and is staying dry in the rainy Seattle fall.

I had high hopes for this jacket from all the great review. I needed something light to for my recent trip of the high sierra route. I am so lucky it didnt rain the whole trip because the pit seam was torn on the first day before when I went to put it on. Luckily I was able to patch it and make it usable for the rest of the trip. It kept me extra warm over my down and on chilly mornings but because of the durability, its going back.

What more can you ask from a packable rain jacket! Keeps you dry, is super light to stuff in a pack, and looks great!

By far the best light weight water proof jacket. I use this jacket for mountain biking for those days when you get caught in a down you and it is amazing. Super light weight and stuffs super small in its own pocket.

What else do you want in a jacket? well maybe arm-pit vents but for me, this is more of an emergency shell I take for day hikes and climbs. The taped seams means you'll be staying dry when the weather isn't on your side.

The best lightest weight rain jacket
One night it was downpour raining and this jacket is amazing... kept me dry the whole time
Super light and breathable

What can I say Everything is Awesome about this rain shell. Except for the fact that doesn't have pits zips.

This is the best rain shell I have owned. Incredibly light weight, and the thin material also keeps you warm on those chilly rainy days.

Have used this about 4 times in drizzle to light/moderate rain. It appears to be fairly breathable. So convenient to just pull out of my pack and unpack out of its pocket and pull on without hardly stopping running. The only complaint is it does not have fasteners over the wrists so water can easily drip into the jacket from your hands, especially as I run with my elbow at less than 90degree angle. Thinking of coming up with a rigged velcro fastener I can attach to the wrist.
I can wear in any weather temp, just varying my base layer . Overall a great jacket and very portable either by carrying in hand or in a running vest/pack. I'm 5'10'' 143 lbs and wear a small and its perfect. Love the waist adjuster and the hood adjuster. I use it solely for running, am an ultra runner but have not used for over 10miles yet.

Summary: Some compromises and not a workhorse rain jacket for bad conditions, but light, compact, and effective enough to carry as a just-in-case piece.

- Fit is cut close and a bit short. I'm an athletic 6', 200, 44" chest to around a 35" waist with big shoulders, about a 20.5" torso length for backpacks. My typical sleeve length is around a 34/35. I own the large. Enough for some layering, but nothing too bulky (a close-cut fleece would work, my down puffy billows and gathers). It runs a bit short in the torso, which is my main complaint. When moving around, the jacket pulls up on my torso and exposes lower part of my waist/midriff.

- This thing is unbelievably light at 6 oz, and packs down small into a dedicated pocket. Super impressive at this price point. There are more breathable, lighter options but they retail a good $100-150 more.

- No vents. Get stuffy in high output activity.

- Really bare bones on the features. No hand pockets (one Napoleon pocket), and no cinches on the cuffs. Hood is surprisingly functional for how bare bones it is, but not as customizable as a more full-featured jacket.

- Pretty waterproof (Pertex Shield + is rated at 20k mm waterproofing), but will still wet through in bad conditions. It's also so thin that it can 'feel' wet in a downpour even though water isn't making it through the membrane.

- Blocks wind, but requires an insulating layer if it gets really bad.

Would give it 5 stars if it was cut a little longer. I carry mine around with me everyday in San Francisco or on late spring/summer hikes, just in case I need it. For hikes I expect to run into rainy conditions, I take a burlier, more fully featured jacket (but heavier) jacket.

Took this jacket on weekend trip with a soggy forecast, and it kept me dry without issue. I'm 5'8", 145lbs, and the small fit great, wasn't too big by itself, but I could still fit it over a light down jacket without issue for added warmth. It's a no frills rain shell, but has fully taped seams and zipper. No hand pockets, but there is a chest pocket for sunglasses or a phone. It packs down small, and didn't take up any room in my pack. There are more technical fabric that will breathe better if you're doing high intensity stuff, but if you just need something to keep you dry in a pinch, or on a hike, this will do that well.

Great, lightweight jacket. I wanted something I could toss in a backpack and wear over other layers of the weather got bad. This jacket fits great, moves well, and you can pack it away when you don't need it.

I bought this for a friend traveling around South East Asia and so far so good! True to size and keeps him dry.