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Arc'Teryx Alpha FL 45

3 Reviews   |  

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The Arcteryx Alpha FL 45 is an ultralight, highly weather resistant 45 litre climbing pack suited to fast and light alpine, ice, rock and ski mountaineering routes.

Aggressive attention to performance details and a commitment to quality combine in an alpine-ready pack. Highly weather resistant, and designed for the rigours of ice and granite, this is the next level rucksack for climbers and ski mountaineers.

Elevated Performance:Commitment to each subtle detail may seem obsessive, but these details come together to elevate performance. The suspension system offers load support with minimal weight, and the double pull drawcord closure is easy to operate, even with gloves on. Collar serves to extend volume and protect contents when not required.

Lightweight & Super Strong: It begins with the materials. Exceptionally light and strong, N400-AC2 pack fabric is coated inside and out to create an air and water impermeable fabric that resists almost any weather condition. Very resistant to abrasion, the bag can be hauled and dragged through rocky environments and withstands abrasion from ice and snow.

Stripped down to the essentials: Weight can slow you down, so the pack is pared down to the essentials. The N400-AC2 fabric is extremely light for its level of strength. Thermoformed shoulder straps cut weight without eliminating comfort. Every gram counts, so even the seam tape is stripped down to 15mm wide.

Moving fast still requires carrying the essentials. The 45 litre capacity provides enough volume for a long day's ski or a minimalist's multi-day trip. Four attachment points (two on each side) carry skis or a sleeping pad, and the bungee attachment holds crampons or can stash an Alpha FL Jacket for quick access when the weather takes a turn for the worse.


  • Weather resistant & Durable
  • WaterTight™ external zippers
  • Main compartment pocket
  • External zippered document pocket with key clip
  • Reflective white interior makes it easier to see items inside the pack
  • Dual haul loops/carry handles permit hauling or clipping off at a snow anchor
  • Rigid, formed backpanel provides support and structure while remaining comfortable against the back
  • Fully seam-sealed for water resistance
  • Arc'teryx AC² (Advanced Composite Construction) suspension system
  • Adjustable, removable sternum strap
  • 4 cm/ 1.6 in webbing hipbelt
  • Thermoformed shoulder strap
  • RollTop™ closure
  • Extendable collar with drawcord for additional capacity
  • Large, webbing pull-tabs for quick and easy, glove-friendly access
  • Top compression strap
  • Two ice axe loops
  • Four integrated side lash points
  • Includes bungee front attachment system for carrying campons or additional items
  • Six integrated front lash points


  • N400r-AC² nylon 6 ripstop is durable and lightweight
  • N70r-HT nylon 6,6 ripstop
  • N100mr-HT nylon 6,6 mini-ripstop
  • N400r-AC² nylon 6 ripstop
  • HD 80 foam back panel
  • HyPUR-cel® Foam
  • Burly™ Double Weave - 46% nylon, 46% polyester, 8% elastane


  • Dimensions (cm): 70 x 35 x 20
  • Back Length (cm): 46
  • Material: N400r-AC² nylon 6 ripstop, N70r-HT nylon 6,6 ripstop, N100mr-HT nylon 6,6 mini-ripstop
  • Hydration Compatible: No
  • Ice Axe Holder: Yes
  • Removalable Belt: Yes
  • Volume: 45
  • Weight: 650g

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Filter Reviews:
    Martin C.
    United Kingdom United Kingdom

    Rugged Rucksack

    Totally happy with this robust rucksack, even with its minimalist style.

    Martin Corfield verified customer review of Arc'Teryx Alpha FL 45
    Ian J.
    United Kingdom

    Arc’teryx Alphs 45 FL

    Great service, I chose standard delivery and received it in a couple of days. No fuss or bother at all! Used the sac at the weekend for crashing, better comfort than I had expected, got everything in and simple design, so far extremely pleased with it!!

    Tom R.

    Excellent product, quality is second

    Excellent product, quality is second to non. Looking forward to giving it a proper road test in the Alps this coming summer.