Arc'teryx Alpha LT Jacket

Priced: $323.99 - $579.00 Rated:   - 5 stars out of 5 by 2 reviews.
Arc'teryx Alpha LT Jacket
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Color: Thalo Blue
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Arc'teryx Alpha LT Jacket -

The Men's Alpha LT Jacket by Arcteryx is the tool of choice for the fast and light alpine crowd. Tough GORE-TEX Pro Shell serves up full weather protection and is further enhanced by the technical features. Lightweight and supple, this alpine focused jacket features an improved Speed Hood and the harness HemLock keeps the jacket hem from rising above a climbing harness.

FEATURES of the Arcteryx Men's Alpha LT Jacket.
SPECIFICATIONS of the Arcteryx Men's Alpha LT Jacket.


  • Embroidered logo

Weather and Wind:

  • Tiny GORE® seam tape (8mm/ 3/16 & 13mm/ 1/2")
  • Durable Water Repellent finish aids in shedding snow and beading up rain; jacket is fully seam-sealed
  • Micro-seam allowance (1.6 mm) reduces bulk and weight
  • Windproof GORE-TEX® Pro 3L fabric is tough yet supple; microseams and narrow tape reduce weight and bulk
  • 3-layer Gore-Tex Pro membrane, fully taped seams


  • WaterTight Vislon front zip
  • Corded zipper-pulls reduce noise and are easy to grab
  • 2 high, crossover pockets with water-resistant WaterTight™ zippers are compatible with harnesses and packs, and are easy to see into; jacket also has 1 internal pocket
  • Underarm zippers

Lining and Layers:

  • Athletic e3D patterning provides room for three layers while facilitating movement
  • Generous cut allows easy layering; anatomical shaping frees up movement


  • Athletic fit with e3D, hip length
  • Anatomical shaping for fit and comfort


  • Hem Lock removable inserts prevent jacket from slipping out from underneath harness and adjustable hem drawcords
  • DWR finish (Durable Water Repellent) helps bead water from fabric surface
  • Drop back hem
  • Laminated hem
  • Nylon, plain weave N40p-X exterior is supple and lightweight for high performance Gore-Tex Pro 3L


  • Speed Hood system
  • Laminated hood-and-loop tabs
  • Helmet-compatible StormHood™ can be cinched with glove-friendly 1-hand adjustable drawcords; hood rotates with the head without obscuring vision


  • Pit zippers for easy venting
  • WaterTight™ pit zippers allow rapid ventilation; jacket features molded zipper garages
  • Breathable
  • Water Tight pit zippers permit rapid ventilation


  • Gusseted no-lift underarms and articulated sleeves allow ample arm movement for swinging ice tools and planting poles in backcountry powder


  • Articulated elbows
  • Harness HemLock inserts keep jacket in position under harness
  • Adjustable elastic waist drawcord
  • Non-chafing label
  • Laminated die-cut Velcro cuff adjusters reduce bulk, and won't catch or tear off
  • Arc'teryx Alpha LT Jacket for men features a laminated high-strength hanging loop
  • Compressible and packable
  • Gender specific patterning
  • Articulated patterning for unrestricted mobility
  • Laminated chin guard
  • Laminated brim
The Arc'teryx Alpha LT Jacket is an incredibly lightweight and durable waterproof jacket for climbing and other alpinist activities. Made with a GORE-TEX® Pro Shell, the jacket provides superior protection from the elements while remaining comfortably breathable. The hood is helmet compatible, and the jacket features a HemLock design to keep it from riding above a climbing harness. Other features of the Alpha LT include sealed seams for excellent waterproofing, an anatomical shape for comfortable movement, adjustable drawcords, pit zippers for ventilation and a laminated chin guard. It also has a three-layer construction and water resistant zippers.

Let the lightweight Arc'teryx Men's Alpha LT Jacket protect you from wet weather on your alpine ascent. Using an ever-reliable Gore-Tex Pro membrane and WaterTight external zippers, this jacket boasts guaranteed waterproof and breathable protection to get you up that mountain comfortably. Arc'teryx improved its StormHood to fit climbing helmets better, and the HemLock system features removable inserts to prevent the jacket from slipping out underneath your harness.

Arc'teryx's athletic fit uses complex e3D patterns with anatomical shaping and gussets to reduce bulk and improve your mobility on the mountain. Zip down the underarm vents while you climb to let out some steam, and zip them back up while you belay your buddy on those cold ledges. The cuffs have laminated hook-and-loop tabs that won't catch or tear off during your ascent.


Built for alpinists who go fast and light, the men's Arc'teryx Alpha LT Jacket delivers waterproof, breathable GORE-TEX® Pro 3L protection while staying exceptionally lightweight and durable.


Mountain Gear
Fast and light alpine climbers will love the ARCTERYX Alpha LT Jacket.
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Review RatingNumber of Reviews
Back length:Hip-length
Back length (in.):Unavailable
Closure:Full Zip
Clothing Fit:Trim Fit
Fabric:Nylon / nylon blend
Fabrics/Materials:320N GORE-TEX® Pro Shell 3L
Fit:Athletic with e3D, hip length
Hood:Helmet compatible Storm Hood
Material:320N GORE-TEX Pro Shell 3L
Material Technology:GORE-TEX
Pit Zips:Yes
Pockets:Internal Chest Pocket with Laminated Zip,Two High Crossover Hand Pockets with Laminated Zippers
Seam Taped:Yes
Shell fabric:Nylon
Shell lining fabric:Unlined
Type of waterproofing:GORE-TEX 3-layer waterproof breathable laminate
Weatherproof Material:GORE-TEX
Weight:13.8 oz / 390 g
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Arc'teryx Alpha LT Jacket Reviews:


When you first take a look at it, you wonder why a jacket so lightweight costs $$$. Then you put it on and you appreciate the athletic fit, the durable construction, the micro seams with micro taping, and the waterproof zippers. Then you wear it during a snowmaggedon event and it all makes sense. The 40D Nylon and Gore-Tex Pro 3L material works like magic. Its deceptively light, but impressively durable, totally waterproof, and still allows your body to breath during high output activity. Unparralleled quality of construction. As a technical shell, the expedition fit has a waistline that is lower at the back than at the front, for compatibility with a harness. That might look goofy for the casual wearer. It also doesn't have hand pockets because you can't use them in a harness anyway. When fully zipped the jacket has a high collar, also an expedition feature. Again, might look goofy. Or you might look like a rugged an of action. That is on you. The hood is adjustable and happiest when you're wearing a climbing helmet. The chest pockets are a good size. Sleeves are a little long so they don't slide up when swinging an axe or placing a cam. Gents, keep in mind that this is purpose built expedition wear. Highly packable, there is no excuse not to bring this with you no matter the time of year. In winter, wear it over layers as a technical shell. In spring/fall wear it over long sleeves to block wind and rain. In summer, wear it over t-shirt for waterproof comfort. However, if price is a major concern there are other jackets with similar features for less $$. 4 stars only for price.

J Miles at on 12/15/2013

I wanted a lightweight rainshell that didn't feel like it was so thin that it would tear if it snagged on a branch. This thing is super light, but it feels like a suit of armor. I love it.

HLSAM at on 11/14/2013