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  • Supple, high performance GORE-TEX Pro 3L features 8mm seam tape where possible for improved performance and less bulk
  • Durable water repellent finish enables light precipitation to bead up and roll off
  • Helmet-compatible StormHood™ features 1-handed cinch cords and moves with your head to prevent vision obstruction
  • WaterTight™ zipper with flap increases weather protection
  • Single chest pocket; included stuff sack has a clip-in webbing loop
  • 2-piece HemLock™ inserts work with hem drawcords to prevent jacket from slipping out from underneath a harness
  • Arc'teryx Alpha FL Jacket features a trim fit to aid mobility and let you see your gear on your harness more easily


View all Arc'teryx Men's Multi-Sport Rain Jackets

REI membership


Best Use Backcountry Skiing, Hiking, Mountaineering, Climbing
Windproof Yes
Waterproof Yes
Type Of Waterproofing GORE-TEX 3-layer waterproof breathable laminate
Hood Yes
Packable Yes
Back Length Hip-length
Gender Men's
Weight 10.9
Shell Lining Fabric None
Shell Fabric Nylon

Size chart

Sizing notes

SHORT: Some pants are available in short sizes, which generally means an inseam that is 2 inches shorter than regular sizes. TALL: Some pants are available in tall sizes, which generally means an inseam that is 3 inches longer than regular sizes.

Rated 4 out of 5 by from Great replacement for my old 10 year old SV I bought this jacket to replace a 10 year old Alpha SV that is coming unglued at the seams but still surprisingly waterproof after plenty of use in NZ and the Pyrenees. My old SV like just about everything I buy from Arcteryx is size M so I was concerned that perhaps I should go to L as the FL is trim fit. I shouldn't have worried M fits perfectly maybe just a little neater but there is plenty of room for layering and movement. I haven't worn the jacket in heavy rain yet so I only gave a 4star rating but because it is Gortex pro I have no concerns there. I'm sure the FL will be a good replacement for the SV. I am182 cm and 82 kgs
Date published: 2015-08-22
Rated 5 out of 5 by from Most versatile shell Arcteryx sells This shell is extremely light, packs to a minimum, and breathes very well. It is just as suited for summer rain as it is for tree-riding in powder (with an appropriate bib pant and midlayer) or to pack as a rain jacket on a business trip. The cut is trim around the hips but generous in the chest and shoulders (I'm 5'9 148 lbs and of average build). The fabric has a fairly soft hand but a little crinkly. The one pocket is in the right location and a good size, easily fitting a passport and boarding pass. Very minimalist modern styling that works with just about any street clothing. The Carbon Copy is by far the most versatile colour but the Chipotle Orange and Mantis Green are also quite nice and the web-photos are true to colour. Highly recommended.
Date published: 2014-04-29
Rated 5 out of 5 by from sickest alpine climbing shell jacket ever Most of the time my shell rides in the bottom of my pack, making minimal weight a big concern. This thing is stripped down, no frills, amazing piece. The hood is awesome, the fabric breaths really well. I dont really miss the pit zips cause when Im wearing it, its nasty out. Arc'Teryx nailed it.
Date published: 2014-12-03
Rated 5 out of 5 by from In my opinion... The product line came highly recommended by my buddy, and after researching this product I made the purchase. To begin I am a athletic 6'0" 205 lb male who was not sure the Large would be the correct fit, but it was. I picked up this specific product after the competition had fallen short of my needs. I am an avid back country nordic skier, and on and off road cyclist. Much of my experience is when a product does extremely well on one aspect, it fails considerably on another. My major concern was will this product wet out in extreme weather, and will the material wick my perspiration adequately. Much to my amazement, it did both very well after testing it for several days out in the White Mountains of New Hampshire. During this outing I used a Patagonia Cap 1 Base Layer, along with a R1 Pullover. I was very impressed on how my body temperature was never too hot or cold. No pit zips was a concern, but since it appears that the Gortex Pro does what it is suppose to, it may not be a concern over time.
Date published: 2015-02-12
Rated 5 out of 5 by from Excellent Shell This is one of the lightest and most breathable shells I've owned. Historically, I've found water resistant jackets to be very lacking on the breathability side of things (hence all the air vents, etc.), but that hasn't seemed to be the case here. The fit is more on the form-fitting side of things, and overall dimensions are what I'd expect from an XL jacket on someone with an athletic build. I haven't bought something from Arc'Teryx that's disappointed me yet.
Date published: 2013-03-14
Rated 5 out of 5 by from A whole new category of garment. (This review is for the SS'14 jacket, made with Gore Pro). For me, there are two types of Arc'product. The first, fits into a category, 'generic, plus'. Take the Delta AR zip neck. A great piece, but not exactly ground breaking. It doesn't need to be. A simple, warm, versatile fleece top, the type of which many other manufacturers produce, just done that little bit better. Better fit, more durable, superior design. This jacket falls into the second category. In fact, the point is, in many ways, it defies categorisation. It's a REALLY lightweight shell - barely more than 300gramms, yet it's as durable and has all the essential features of year-round, all-weather shells that weigh double. It's a full-on mountain shell, but it's more, because of the lack of weight, the supreme breathability, (it is as breathable as my old eVent jacket), the reflective logos, the amazing packability, it could easily be used for biking, day hikes, even fell running. Put simply, no other manufacturer makes jackets like this. (Or are simply incapable of doing so). No other manufacturer makes a product so breathable, lightweight, packable, whilst still making absolutely no compromise on durability and quality of features. I use this piece for everything, from walking the dog to full-on mountain use. It works perfectly in either environment. To elaborate on the feature set, the hood is perfect and has amazing adjustability. Velcro cuffs are chunky and very sticky. The fit is perfection. I'm not sure I would categorise it as 'trim fit', personally. It fits very similarly to the Alpha LT, just a little less room in the waist and torso, which is ideal for this piece. It keeps the garment close fitting without being restrictive, but I could still easily fit my Nuclei Hoody and perhaps a fleece top on underneath. Only one pocket, which will be a drawback for some, personally I don't use hand pockets on a shell, so I don't miss them. The pocket provided is easily big enough to fit a map, phone, snack bar, gloves, and is well positioned. I've mentioned breathability - it really is the most breathable shell I've owned. Easily as breathable as my old Beta FL made from Gore Active and the two shells I've owned that utilised eVent. Given that this piece is made from Gore Pro, with it's added durability, that's a key feature. You can see (at least in part) how they did it - the inside of the jacket is a masterpiece of minimalist design. Tiny, tiny seams and flawless construction. All-in-all, an amazing piece. A true all-rounder, and my new personal favourite.
Date published: 2014-05-07
Rated 5 out of 5 by from Excellent This is my first Arc'teryx product and my first gore-tex jacket. My wife bought this as a great Christmas present. I just walked my dog in Seattle about a mile where it's 36 degrees in this jacket over a cotton t-shirt. I then used an infrared thermometer and the temperature of my bare forearm was 76. The surface temperature of the jacket sleeve was 63 degrees. I also wore this jacket in Guam two weeks ago to protect from rain and it was very breathable. Incredible.
Date published: 2012-01-15
Rated 5 out of 5 by from Best layering jacket for rain or snow I use this jacket for spring/summer rain and then winter snow in Germany. It layers great and it always fits me even when over a sweater. I am a skinny person, so be ready for it to be snug if you are not. This jacket breathes, it's super light weight, and it really protects against water. Instead of having a larger jacket I just layer this on top for snow.
Date published: 2015-09-21
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Does this jacket have pit zips?

Asked by: Chefmattrock
This jacket does not have pit zips.
Answered by: REIservice
Date published: 2016-11-21

I'm 6'2" and pretty much all of Arc'teryx hardshells (even XL) have sleeves that are too short for me. Could you send me some measurements of this jacket in LARGE to buy it online? (chest, waist, bottom, sleeve, back and front length) 

Asked by: Rodrigo Altamirano
The measurements for the Alpha FL are as follows: Back length- 31 inches Bottom of the waist- 23 inches Sleeve length- 37 inches Chest measurement- 50 inches
Answered by: REIservice
Date published: 2016-09-06

I'm 5'9" and about 143lbs I didn't know which size I shoud wear . Could you send me measurements of this jacket in Small and Medium please?: ) (chest, sleeve, back and front length)

Asked by: Rexxzy
​We're sorry, but that information is not available.
Answered by: REIservice
Date published: 2016-12-09

Can or will this jacket be offered in the Blaze color?

Asked by: Ken West
​We unfortunately will not be carrying the Alpha FL Jacket in the blaze color.
Answered by: REIservice
Date published: 2016-09-21
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