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Black Diamond
Cirque 45L Backpack

4.695652173913044 out of 5 stars
23 Reviews

Out of Stock

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Cirque 45L Backpack

Despite being one of Black Diamond's lightest, the Cirque 45 Backpack boasts plenty of space for day-long backcountry tours and ski mountaineering missions. Designed for minimalists and ski mountaineers, the Cirque features only the basics but still retains a full-featured design. It carries skis diagonally or at an A-frame, as well as your helmet, avalanche safety gear, ice axes, and even a climbing rope.

Although streamlined for minimalists, the Cirque still sports innovative technology that doesn't add a whole lot of weight to your kit. The SwingArm shoulder straps and stretch waist belt provide active suspension and a streamlined fit. The Cirque is compatible with Black Diamond's AvaLung and SilNylon lid pocket for added safety and capacity when traveling in avalanche terrain.


  • Black Diamond's ultralight backcountry pack for ski mountaineering
  • Large capacity for gear-intensive descents
  • SwingArm shoulder straps and stretchy waist belt move with you
  • Integrated avalanche gear compartment for probe and shovel
  • Tuck-away diagonal and A-frame ski carry straps
  • Stowable helmet flap secures brain bucket
  • Ice axe PickPockets with tuck-away rope strap
  • Item #BLD00L4
210D Dynex, 200D polyester
45L (2746cu in)
active, form-fitting
Shoulder Straps
Waist Belt
1 avalanche gear, 2 PickPockets, 1 waist belt
Gear Loops
Ski Carry
yes, diagonal and A-frame
Snowboard Carry
Helmet Carry
yes, stowable
Ice Axe Carry
Claimed Weight
2lb 5oz
Manufacturer Warranty
1 year

Overall Rating

4.5 based on 23 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 7 reviews
5 Stars - 16 reviews

What do you think about this product?


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5 out of 5 stars

April 26, 2024


Bought this for a spring backcountry ski mountaineering trip up to the summit of Shasta. Was absolutely perfect. Jammed everything I needed inside: shovel / probe / boot crampons / ski crampons / layers / food / water / misc / etc... Fast in the transitions, great for slinging skis, lightweight, easy to dig around for snacks and layers etc...It's well designed and engineered, feels like it was really purpose built for this specific trip. Kudos to the BD design team.

scot h.

Originally reviewed on

4 out of 5 stars

November 3, 2023

Good quality

Never had an issue with quality of black diamond gear. The only suggestion for this pack would be accessibility from the front/side of the pack, so I don't have to take it off to stow skins.

Logan S.

Originally reviewed on

5 out of 5 stars

October 4, 2023

All Time Backpack

Perfect Pack for a day backcountry guiding or a multi day backcountry adventure. I use this pack daily. It fits everything I need for a day of splitboarding with room to spare for the extra large puffy on those chilly days. Perfect amount of pockets for me. I put my rescue gear in the front pouch and everything else in the middle. Snacks, headlamp, inreach, etc in the top pocket. I also love the way it rides on my board while its strapped on, I can snug it down with little shifting movement. The upside of this pack is that it doubles as a climbing pack. I swap it out every season.

Rain F.

Originally reviewed on

5 out of 5 stars

September 3, 2023

Wonderful fit

Better suited for tall individuals compared to other brands (190cm, 90kg). Comfortable belt and back pannel. I enjoy closing the bag with one pull and folding the top easily over a rope. I appreciate the sleek design with few accessories extending from the bag. The helmet holder is cleverly concealed when not used. My favorite backpack so far for all climbing and skiing adventures. Great colour too.

Eric G.

Originally reviewed on

5 out of 5 stars

February 12, 2023

Perfect and Solid

This pack is perfect for touring and hut trips. It's simple, but has pockets exactly where I need them. The best pack I've ever had.

rachael b.

Originally reviewed on

5 out of 5 stars

January 27, 2023

best stoke to weight

Have had this pack for several seasons and its fantastic. can load it up for hut trips or SAR work - especially with the lid attachment for multi day trips, or cinch down the straps and make it snug for low loads and skiing. Carries really well and comfortable without excessive and unneeded features padding etc. 100% reccomend.

Tim D.

Originally reviewed on

5 out of 5 stars

January 24, 2023

neat pack!

This is a great pack, the convertible outside helmet holder and camel back hole are great for efficiency. Good amount of little pockets, but not too many. I like the specialized avi pouch for shovel and probe. Interested to see how it works in falling wet snow. The top has a draw string and small flap that goes over that, not 100% sure it will keep moisture out.... but I am sure BD has things figured out and it will be fine!

Annie R.

Originally reviewed on

5 out of 5 stars

December 9, 2022

Definitely the best on the market

I can recommend this bag as there is plenty of storage, it’s very technical and light!

Charlotte B.

Originally reviewed on

5 out of 5 stars

November 21, 2022

Great backcountry bag that does it all!

I can take this on morning dawn patrols or all day missions deep into the mountains. I would highly recommend this bag.

Zachary A.

Originally reviewed on

5 out of 5 stars

November 14, 2022

Light, and spacious.

This pack feels very comfortable considering how light it is. And it's big enough to fit every item I could possibly need on a ski tour.

Ethan F.

Originally reviewed on