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Infinity 50 Pack

$209.95 $125.97 USD



The Infinity 50 is a lightweight top loader with ergoACTIV suspension for the progressive multi-day backpacker.
Item# BD681076COALL__1
$209.95 $125.97 USD

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Bring everything you’re sure you’ll need, just don’t feel it with the Black Diamond Infinity 50 backpack. Designed with our ergoACTIV suspension, the Infinity is all about comfort and mobility in a big package, blending the volume of a traditional lightweight backpack with the latest in superior design and technology.

  • Patent-pending ergoACTIV suspension with OpenAir backpanel
  • Top loading with floating top pocket
  • Soft, breathable 3D mesh on shoulder straps and removable, interchangeable hipbelt
  • Hipbelt stash pocket, side stretch pockets and front compression stretch pocket
  • Retractable trekking pole/ice axe loops, removable sleeping pad straps
  • Hydration compatible
  • Also available as women's-specific Innova 50

WHY ACTIVE suspension?

WHY ACTIVE suspension?

Black Diamond packs built with our award-winning active suspension systems—ergoACTIV, ergoACTIV XP, reACTIV and reACTIV XP—are unparalleled in comfort, efficiency and load transfer. Because the shoulder straps and hipbelt move with you, friction and hot spots are eliminated. The pack’s load stays perfectly balanced at all times—without adjustment—and allows your body to move naturally in any direction. This results in a more efficient, comfortable, longer stride—meaning you can cover more ground, more quickly.


Tech Specs

Volume :  
[M] 50 L (3,050 cu in)
[L] 53 L (3,234 cu in)
Average Stock Weight :  
[M] 1.7 kg (3 lb 12 oz)
[L] 1.74 kg (3 lb 13 oz)
Materials :   210d Nylon Ripstop, 420d Nylon Twill

Recommended Use


  • Outside Magazine Gear of the Year Award 2010

  • National Geographic Adventure Magazine - Best Adventure Gear 2010

  • Men's Journal Best In Gear


Rated 5 out of 5 by 3 reviewers.
Rated 5 out of 5 by Great pack Just received this pack 8 hours before a 3 day hike in the whites (Adams & Madison) this pack was a downsizing for me as I only go for 2 or 3 days now I didn't need my 100+ liter pack anymore but was concerned about this pack handling the weight I usually carry and am happy to say it handled about 40# wonderfully the pack really does move with you shoulder straps and hip belt very comfortable the only thing I miss is having access through a side zipper or sleeping bag compartment zipper its tough when you need your bag and have to pull everything out of your pack to get it so you need to pack a little different to compensate other than that the pack performed great and I would highly recommend June 11, 2014
Rated 5 out of 5 by Sierra overnight, love the waist belt!! Just did a 3 day Sierra trip, and I love that waist belt. I got a little surprise on the trip, everybody left early so I had to stuff another 30 lbs into the bag. It all went in there. I walked the 7.5 miles out with no issues and did I mention the waist belt is awesome? It is almost like the pack is not there. October 3, 2013
Rated 5 out of 5 by Great Pack I use this pack as my first response 72 hour pack for search and rescue. I have short hauled under a helicopter, skied, climbed and snow mobiled with it. . In every case this pack has never failed me and has been very comfortable. I can't say enough about BD products they are the trusted one's I turn to when I need dependable gear. Keep up the good work Black Diamond July 6, 2013
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