Alpha AR 55 Backpack

Regular price$300.00 CAD
Shipping calculated at checkout.
  • Lowest Price Guarantee

Durable, versatile multi-day ice and alpine climbing pack in our Hadron LCP fabric. Alpha Series: Climbing and alpine focused systems | AR: All-Round
Size chart


Packs Size Chart

Size Unisex (cm/in) Women's (cm/in) Men's (cm/in)
Short 42.5cm - 47.5cm (16¾" - 18¾") 40.75cm - 44.25cm (16" - 17½") 44.75cm - 48.25cm (17½" - 19")
Regular 46.5cm - 51.5cm (18¼" - 20¼") 43.25cm - 47.5cm (17" - 18¾") 47.25cm - 51.5cm (18½" - 20¼")
Tall N/A 46.5cm - 51.5cm (18¼" - 20¼") 50.5cm - 55.5cm (19¾" - 21¾")

How to find your measurements

Note: Calculate your own body measurements, then select your product size.

  1. Back Length: To determine your size, measure down the spinal column from the 7th cervical vertebra and the level of the hip iliac crest.
  2. Shoulder strap: Sizing refers to bust/chest circumference. Measure around the bust/chest at the fullest point.
  3. Hipbelt: Sizing is based on a measurement around the hip iliac crest. Measure around the body at the top edge of the hip iliac crest, approximately 2 inches below the point at which you would measure your waist.
  • Low stock - 2 items left
  • Get notified when the item is in stock.

Pairs well with

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.

Technical Features

  • Weather resistant
  • Durable

Pack Attachment Configuration

  • 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

Pack Compression Strap Configuration

  • Top strap securely holds ropes

Pack Design & Construction

  • 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

Pack Dimensions

  • Alpha AR 55 Backpack = Length (REG/SRT): 66/62cm, Width: 30cm, Depth: 26cm, Centre Back (REG/SRT): 59/55cm

Pack Hydration

  • Micro-webbing hydration hose loops
  • Hydration port allows for ease of tube passage outside of main compartment
  • Hydration reservoir sold separately

Pack Lid Configuration

  • Top lid with WaterTight zipper can be extended or removed

Pack Loading & Closure Configuration

  • Pull-to-open / pull-to-close drawcord main compartment for easy access
  • WaterTight side zipper gives quick access to main compartment

Pack Pocket Configuration

  • Main compartment pocket
  • Security pocket under lid with key clip stores phone, keys and other small items

Pack Suspension Configuration

  • 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.


  • French Regulation: AGEC Law - Article 13
  • Origin of fabric: KOREA
  • Origin of dying: KOREA
  • May release plastic microfibres into the environment when washing
  • Hadron - N315r HT nylon 6,6 LCP - bluesign Approved Material, FC0 DWR

Climb On Equipment offers free in-store pick up and ships within Canada & USA (some restrictions apply).

Most orders qualify for free shipping when over $99. Heavy/bulky items such as bouldering pads and faster shipping options do not qualify for free shipping. 

Work & Rescue Orders may qualify for volume discounts. Volume discount orders do not qualify for free shipping. For a more detailed information on shipping, please go to our Shipping Policy page or learn about Returns and Warranty.


You might also like

Recently viewed