Arc’teryx Alpha FL 45L

Ultralight, durable, highly weather resistant climbing pack designed for fast and light travel on alpine, ice, rock and ski alpinism routes. Alpha Series: Climbing and alpine focused systems | FL: Fast and Light.


Alpha:
- Lightweight, minimalist climbing and alpinism products that protect from alpine environments.

Fast and Light:
- Minimalist, high performance and light weight, for rapid travel in variable conditions.

Advanced Composite Construction:
- Laminated, highly waterproof and light weight. Taped seams, permits custom attachments.

Alpinism and Climbing:
- Climbing equipment designed for efficient movement and protection in alpine environments.

Multi-day Packs:
- Optimized for load stability, energy efficient carry and function with an emphasis on durability.

The Arc’teryx attention to performance details, focus on delivering maximum functionality with minimalist design, and unrivaled commitment to craftsmanship combine in a fast, light, hardwearing pack for climbers and ski alpinists. It begins with the materials. Highly weather resistant, light in weight, and designed for the rigors of ice and granite, the N400-AC² pack fabric is coated inside and out to create an air and water impermeable fabric that resists almost any weather condition and is very resistant to abrasion.

MOVING FAST AND LIGHT: A comfortable carry is key. The Alpha SL 45 uses an HD 80 foam back panel to provide support, structure and padding. The efficient suspension system offers load support for minimal weight. Unique thermoformed shoulder straps combine the N400r-AC² nylon 6 ripstop, Burly™ Double Weave fabric and HyPUR-cel™ foam. The result is an air permeable strap that provides comfort and minimizes irritation, yet is surprisingly light in weight. A simple 40mm webbing belt helps minimize sway while navigating technical routes. The pack weighs a mere 670 grams (23.6 ounces) and is optimized to work with other Arc’teryx Ascent products to deliver an ultrafast, ultralight alpine system ready for the harshest conditions.

ELEVATED PERFORMANCE: Moving fast still requires carrying the essentials. The 45L capacity provides enough volume for a long days ski or a minimalists multi-day trip. Instead of the traditional lid, a combination drawstring and RollTop™ closures are employed. This design reduces weight by eliminating the top lid that is generally shoved inside when on route, improves speed and accessibility to the main compartment, and allows users to increase or decrease pack volume as necessary. When not needed, the RollTop™ tucks into the pack and out of the way, leaving the drawstring collar to seal the pack. Lash points on the front and each side help carry skis or a sleeping pad, and the bungee attachment holds crampons, ice tools, or can stash a jacket for quick access when the weather turns. Two loops at the top permit the pack to be hauled, and a top strap secures a rope. Every gram counts, so there are no extraneous features or construction elements. Even the seam tape is stripped down to a scant 15mm wide.

- one size 0.65 kg / 23 oz / 33 L / 45 L max
- Activity: Rock Climbing / Ice Climbing / Alpine Climbing


Technical Features:

- Weather resistant
- Durable

Zippers & Fly Configuration:
- WaterTight™ external zippers

Pack Pocket Configuration:
- Main compartment pocket
- External zippered document pocket with key clip

Pack Design & Construction:
- Rigid, formed backpanel provides support and structure while remaining comfortable against the back
- 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
- Fully seam-sealed for water resistance
- Arcteryx AC² (Advanced Composite Construction) technology system

Pack Suspension Configuration:
- Adjustable, removable sternum strap
- 4 cm/ 1.6 in webbing hipbelt
- Thermoformed shoulder strap

Pack Loading & Closure Configuration:
- RollTop™ closure
- Extendable collar with drawcord for additional capacity
- Large, webbing pull-tabs for quick and easy, glove-friendly access

Pack Compression Strap Configuration:
- Top compression strap

Pack Attachment Configuration:
- Two ice axe loops
- Six integrated front lash points
- Includes bungee front attachment system for carrying crampons or additional items
- Four integrated side lash points can accomodate straps up to 22mm wide


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

Care:

- Surface clean only.

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