This Product
Gregory Optic 58L
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Arc'teryx Bora AR 63
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Awards  Editors' Choice Award Top Pick Award Best Buy Award Top Pick Award 
Price $210 List$269.95 at Backcountry
Compare at 2 sellers
$280 List$199.00 at REI$549.00 at REI
Compare at 3 sellers
Overall Score Sort Icon
77
84
78
77
77
Star Rating
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Pros Light-weight, good value, great featuresLight-weight, comfortable with heavy loads, perfect pocket combinationLight-weight, comfortable, supportive, functional feature setLight-weight, comfortable, easily personalized, inexpensiveSpectacular suspension, comfortable padding, ergonomic shoulder strap design, extremely weather resistant
Cons Poor support under heavy loads, Fixed torso and waist beltTiny buckles hard to operate with glovesNo lid, back-panel lacks ventilationlacks durabillity, not made for heavy loadsExpensive, heavier, few convenience features
Bottom Line This light weight pack performs really well unless it gets overloaded with too much weightThis super-light pack caries loads like a pro and has just about every feature you could ever wantThis comfortable yet supportive pack has an extremely functional set of features and is one of the lightest in our testThe Features on the Flash 55 are some of the best and most versatile of all the packs in our testOur testers were stoked on this pack's dreamy suspension and weather resistance
Rating Categories Gregory Optic 58L Granite Gear Blaze 60 Catalyst REI Co-op Flash 55 Arc'teryx Bora AR 63
Suspension And Comfort (45%)
7
8
8
7
9
Weight (20%)
10
9
9
10
5
Features And Ease Of Use (20%)
9
9
8
9
7
Adjustability (15%)
5
8
5
5
8
Specs Gregory Optic 58L Granite Gear Blaze... Catalyst REI Co-op Flash 55 Arc'teryx Bora AR 63
Measured Weight (pounds) 2.52lbs 3 lbs 3 lbs 2.6lbs 5.00 lbs
Volume (liters) 58 L 60 L 75 L 55 L 63 L
Access Top Top Top Top Top + side access zipper
Hydration Compatible Yes Yes Yes Yes Yes
Materials Main Body: 100d High Tenacity Nylon Bottom: 210D High Tenacity Nylon 100D robic nylon w/ DWR coating 400 Robic fabric Main body: 100D ripstop nylon
Bottom: 420D nylon
Weatherproof N400r-AC squared fabric in areas exposed and a mix of N420p-HT and N630p-HT plain weave Nylon over the rest of the pack
Sleeping bag Compartment No No No No No
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