Arc'teryx Alpha AR 55 Backpack
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$250.00
Our 55-litre Alpha AR is your pack for epic multi-day climbs. Made to withstand rock, ice, and alpine environments, it’s built from our Hadron™ LCP (liquid crystal polymer) grid fabric - a proprietary material redefining the standard for lightweight abrasion resistance and durability. A removable framesheet and lid let you shed weight, and the main compartment is accessible via WaterTight™ side zip or pull-to-open/pull-to-close top. Custom daisy chains and dual dog bones securely attach tools and gear, the ergonomic hipbelt and harness provide a comfortable carry, and rope straps under the lid.
Size Chart
PACK SIZING,
- Alpha AR 55 Backpack = Length (REG/SRT): 66/62cm, Width: 30cm, Depth: 26cm, Centre Back (REG/SRT): 59/55cm
PACK SIZING CHART
PACK SIZING,
YOUR BODY (BACK LENGTH) MEASUREMENTS IN INCHES:
Size | Unisex | Women's | Men's |
Short | 163/4 - 183/4 | 16 - 171/2 | 171/2 - 19 |
Regular | 181/4 - 201/4 | 17 - 183/4 | 181/2 - 201/4 |
Tall | N/A | 181/4 - 201/4 | 193/4 - 213/4 |
Product Details
- Weather resistant
- Durable
- Six integrated front lash points
- Custom webbing daisy chains for lashing items, ice pick capture webbing accommodates a range of angles
- Dual dog-bone tool attachments
- Top strap securely holds ropes
- Removable framesheet and back panel for versatility and packability
- N315r-LCP fabric is a high tenacity nylon with a liquid crystal polymer ripstop grid
- Custom webbing daisy chains for lashing items, ice pick capture for a range of angles
- Hydration port allows for ease of tube passage outside of main compartment
- Hydration reservoir sold separately
- Micro-webbing hydration hose loops
- Top lid with WaterTight™ zipper can be extended or removed
- Pull-to-open / pull-to-close drawcord main compartment for easy access
- WaterTight™ side zipper gives quick access to main compartment
- Security pocket under lid with key clip stores phone, keys and other small items
- Main compartment pocket
- Padded, contoured shoulder straps
- Padded, breathable hipbelt
- Contains materials that meet the bluesign® criteria
- Self fabric uses PFC-free DWR: PFCs are a class of chemicals used to provide highly effective water repellency to textiles, but are known to persist in the environment.

Alpha AR 55 Backpack
$250.00