Arc'teryx Men's Alpha FL Jacket

Priced: $219.42 - $399.00 Rated:   - 5 stars out of 5 by 5 reviews.
Arc'teryx Alpha FL Jacket
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Color: Mantis Green
Available Colors:
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Arc'teryx Alpha FL Jacket -
FEATURES of the Arcteryx Men's Alpha FL Jacket.
SPECIFICATIONS of the Arcteryx Men's Alpha FL Jacket.

Weather and Wind:

  • Micro-seam allowance (1.6mm) reduces bulk and weight
  • Fully taped seams mean no drops can get through and send you back to base camp
  • The guaranteed waterproof and highly breathable Gore-Tex Active Shell features an incredibly durable nylon outer shell to keep any amount of snow, rain, or rime out


  • e3D Ergonomic 3-Dimensional patterning for enhanced comfort and mobility


  • Ultralight laminated WaterTight zippers allow access without vulnerabilities
  • Watertight zipper with flap increases weather protection


  • Two piece Hemlock inserts work with hem drawcord to prevent jacket from slipping out from underneath a harness
  • Nylon, plain weave N40p-X exterior is supple and lightweight; high performance Gore-Tex Pro 3L features 8mm seam tape where possible for improved performance and less bulk


  • Arc'teryx Alpha FL Jacket features a trim fit to aid mobility and let you see your gear on your harness more easily
  • Trim fit with e3D adds mobility yet keeps fit close to enhance breath ability; improves line of vision to see the gear on your harness
  • Anatomical shaping for fit and comfort

Lining and Layers:

  • The trim e3D anatomical fit includes room for layers but doesn't impede your axe-swinging or anchor-building


  • Highly breathable-maintains comfort during aerobic activity


  • A helmet-friendly, adjustable hood features a laminated brim to keep it from flapping in the wind as you climb in Alaska or Asia
  • Helmet-compatible Storm Hood


  • Single chest pocket; included stuff sack has a clip-in webbing loop


  • Reinforced high wear areas
  • Articulated elbows
  • Helmet-compatible StormHood™ features 1-handed cinch cords and moves with your head to prevent vision obstruction
  • Durable water repellent finish enables light precipitation to bead up and roll off
  • Compressible and packable
  • Laminated die-cut Velcro cuff adjusters reduce bulk, and won't catch or tear off
  • Reflective blazes for enhanced visibility in low light
  • Reflective striping around the entire jacket boosts your visibility as a partner belays you after dark
If fancy jacket features only weigh you down during your sweet struggle on the mountain, then the durable, no-frills, and impenetrable Arc'teryx Alpha FL Jacket is your much-needed solution. New for Fall 2011, the Gore-Tex Active Shell is a lightweight, packable, and dependable fabric that blocks out the harshest alpine weather ... and when you have that, you don't need all those bulky pockets and gadgets.

The Arcteryx Alpha FL Jacket is a fast and light jacket for high aerobic, non-stop climbing routes. A clean feature set and trim fit keep the weight and packed size to the minimum while providing uncompromising breath ability. Reinforced in high-wear hip and shoulders.


Men's ultralight Arc'teryx Alpha FL Jacket for climbers and alpinists uses waterproof, breathable GORE-TEX® Pro technology that won't slow you down on highly aerobic, nonstop climbing routes.


Mountain Gear
The Alpha FL Jacket from ARCTERYX is a minimalist alpine shell is designed for those wanting to travel fast and light in the mountains.
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Also available for: Women
Back length:Hip-length
Back length (in.):Unavailable
Clothing Fit:Trim Fit
Fabric:Nylon / nylon blend
Fit:Trim with e3D, hip length
Material:N40p-X GORE-TEX Pro 3L
Material Technology:GORE-TEX
Pockets:Single External Chest Pocket
Seam Taped:Yes
Shell fabric:Nylon
Shell lining fabric:None
Type of waterproofing:GORE-TEX 3-layer waterproof breathable laminate
Weight:10.9 oz / 310 g
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Arc'teryx Alpha FL Jacket Reviews:


Since the purchase late in the summer, I've taken the FL out on a handful of camping, hiking, and backpacking trips and I've come to appreciate its simplicity yet thoughtful design the more I used it. Couple of big pros for me:
1. Lean cut and long arms - having had the Sidewinder AR (which is cut too large in my opinion, but serves its purpose for easier layering, and the Sidewinder is my ski jacket, so not exactly apples to apples comparison here) for past couple of seasons, I really appreciate that the Alpha FL has a leaner cut. Call me vain, but it just looks better when it's cut leaner around the waist, but has plenty of arm length to facilitate the range of motion.
2. I was a little disappointed that I ended up ordering the Citron because the Squid ink was out of stock, but I really dug the Citron once I wore it. It's not as all yellow as it looks on the computer screen, and I think it stands out pretty well.
3. Light, super breathable, and packable. It's certainly not as burly as Gore-Tex pro (hence not as wind-proof), but not quite as trash baggy as the pac-lite (which I still love by the way). I think it's a great balance. I've worn it with no more than a under armor base layer and an Arc'teryx Covert vest at low 30s, and it kept me reasonably warm, yet it's breathable enough to be comfortable while hiking up to I'd say low 60s.
4. Helmet compatible hood and the adjustment provided are excellent.
One downer for me is the lack of pit zips, I would've taken on couple more ounces to have that...despite the fact that the active shell is quite breathable. I really wouldn't recommend this if one were looking for a snow sport jacket, just not enough pockets, the leaner cut may be difficult for layering depending on your build, and not as burly as the pro or the soft shell.

Yung Lee at on 10/25/2012

I love this jacket, so light it's like wearing nothing but still gives full protection from the elements. Cut and fit is perfect if you are slim with long arms, this is the only jacket I have ever owned where the sleeves were long enough and the jacket does not ride up when you put your arms over your head. Packs to almost nothing. Material is not exactly stretchy but does seem to have a little give. I like the added mobility of not having pit zips and the material seems to breathe well enough to not need them. I am 6'1", 183lbs, 32" waist, 43"chest, size large fits like a glove with enough volume to get an Atom LT underneath on colder days.
Unbeatable deal from backcountry on sale !! with the confidence of the best return policy ever, great job guys !!!

Jmh at on 02/26/2013

This jacket really is exception. Used it today in 40 degree torrential downpour. Bone Dry. The new Gore-Tex active shell really gets the job done quite well. Also, the quality of creation in this jacket is exceptional, I am quite glad this jacket is still made in Canada. I am 6'0 and 175 lbs and I went Large, i do tend to like looser fitting jackets though. The squid ink color is really quite exceptional. You will not be disappointed with this jacket.
-One note: this jacket DOES NOT have hand pockets, i knew this and liked this feature on purpose, if you are someone who enjoys hand pockets, the Beta FL is what you are looking for.

Robert Auchincloss at on 12/27/2011

The gore active is as advertised. This jacket fits a bit "young", i.e short. Keep that in mind.

Treat Layer at on 03/26/2013

4000 feet in 2 miles. Didn't get clammy at all.

patrick halferty at on 11/14/2011