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Arc'teryx Alpha FL 45 cardinal
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Read the Review
Read the Review
Awards Best Buy Award Editors' Choice Award Top Pick Award  Top Pick Award 
Price $179.00 at REI
Compare at 2 sellers
$170.00 at REI
Compare at 3 sellers
$289.00 at REI
Compare at 2 sellers
$345.00 at Backcountry
Compare at 2 sellers
$100 List
Overall Score Sort Icon
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80
72
69
67
Star Rating
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Pros Simple, light, comfortable, highly modularComfortable, affordable, durable, fully featuredSimple, good weight to volume ratio, durableExtremely light for volume, very comfortable on approach, good ice tool attachment, 100% waterproofLightweight, simple, excellent pack for steep, technical terrain
Cons Difficult to overstuff for the approach, some finicky featuresNot as lightweight as some packsCan't remove the foam suspension pad, not best for heavy loads, requires thoughtful packingOpening the pack is a pain, not durable, no removable bivy padLess durable, less versatile, no side straps
Bottom Line Highly versatile and impressively lightweight, the Ascensionist is well designed for technical climbsThis is a comfortable and versatile pack that climbs well on all alpine terrainThis pack is light, durable, simple, and comfortable, making it more versatile than most ultralight packs we’ve usedThis pack is extremely comfortable and climbs well, but it is less durable and difficult to get in and out ofWhat the Blitz lacks in versatility it makes up for in performance in steep, technical alpine terrain
Rating Categories Patagonia Ascensionist 40 Osprey Mutant 38 Arc'teryx Alpha FL 45 3400 Ice Pack Black Diamond Blitz 28L
Weight To Volume Ratio (30%)
7
5
9
10
10
Comfort (20%)
7
9
8
9
7
Durability (20%)
8
9
7
2
4
Versatility (20%)
10
10
5
6
5
Features (10%)
7
9
5
5
5
Totals (%)
10
10
10
10
10
Specs Patagonia... Osprey Mutant 38 Arc'teryx Alpha FL... 3400 Ice Pack Black Diamond...
Measured Volume (liters) 35 37 34 50 29
Measured Weight (pounds) 1.95 2.84 1.47 1.7 1.09
Measured Weight (grams) 884.5 1288.2 667.38 771.8 496.1
Weight-To-Volume Ratio (grams per liter) 25.27 34.82 19.63 15.44 17.11
Frame Type None Inner framesheet with aluminum stays Rigid, formed back panel Removable, contoured aluminum stays Foam pad
Fabric 210D cordura 210D nylon with 420HD nylon packcloth on bottom N400r-AC2 nylon 6 ripstop Waterproof dyneema composite fabric Dynex ripstop
Pockets 1 zippered lid, 1 small zippered internal 1 zippered lid 1 front zippered Internal zippered pocket, 1 main compartment, 1 waterproof top lid, 1 internal zippered
Hip belt Yes Yes - reverse wrap hybrid EVA foam w/ gear loops and ice clipper holsters Yes - webbing hip belt Yes - Dyneema Yes - removable webbing belt
Removable Suspension Padding? Yes Removable framesheet and/or dual stays No No Yes
Lid? Yes, attached Yes - removable with stowable FlapJacket for lidless use No No Yes - removable
Hydration System Compatible? No Yes, internal pouch with buckled hanging loop No No Yes
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