I ran into someone skiing Wimpy's Knob in Jackson Hole, WY who was wearing this pack also. He burst out, "I love this pack! I call it my penguin!" This pack does it all. I love the versatility. When I ski with it, I use the straps that are otherwise tucked under the white panel on the back. They are also removable. There is a great small pocket at the top of the pack under the lid, so if you remove the lid, you still have a pocket to stash your lighter, lip balm, and sunscreen.
I find the fit excellent. My only request would be to have a removable back pad that could double as a sleeping pad.

Bomber construction. Has pockets, straps, buckles etc in the right spots. Size is perfect for climbers who need to lug around a full rack. Decided against buying the Splitter from Mountain Hardware. The Dihedral distributes the weight closer to your body than the Splitter - an important feature for technical approaches.

This pack offers a tremendous value. It is as close to bombproof as you'll need in most cases, but has the great option that you can easily remove the hip-belt, framesheet and lid and you'll something much lighter. Good wrap-around compression straps as well.

My only complaint is one of personal preference; I'd love to add:
- external side pockets
- external shovel/probe pockets
- panel loading functionality

At 20% off right now, it is a no brainer. If you are willing to spend more money, I'd go with a Mystery Ranch pack.

I really like this pack for climbing. The compression straps can be clipped around the outside of the pack to hold crampons. The lid pockets are a great size. There are more small pockets than on similar packs (4).

I'm less of a fan of this pack for skiing though. The pocket underneath the white tarp though is a bit of a pain and I would have much preferred to see an externally accessed shovel pocket there, for easy access to skins, shovel and probe. The pack I use for skiing (Black Diamond Anarchist Avalung) has both a good shovel pocket and a side zip for quick access to the main pack.

This pack is form-fitting, supportive, and sleek. The material on it is awesome and feels really durable. The pack features are awesome as well. I especially like the water bladder pocket feature which works perfectly with the one I have. Overall great pack!

I love this pack. It has room to get all my trad gear in it plus more. This pack does it all and is built like a tank.

The top lid has two pockets, one small and one a bit bigger. It also has a camel back pocket and a rope strap.

If you want to go light and fast cinch it up and remove the back support as well as the hip strap and replace the thicker, padded strap with a thin webbing stap that is included.

This pack is highly recommended.

Cheers.

holds a 60m. draws, rack, harness, helmet, water, - shoes on the outside. snug fit but what else do you need. I like that the top flat is removable the above is without the top

I have owned this pack for about 3 year now. Have made several winter summits with it it has never let me down. The versatility of the Dihedral is unbelievable! You can attach anything to it and it rides comfortably all day. If you are in the market for a 40L trailhead to summit pack, dont waist you time browsing, go with the Dihedral. If i ever wear through this one, i will buy another. Im assuming same goes for the larger Direttissima.

I love the Mountain Hardwear Dihedral! It is such a comfortable pack that it has become my go-to climbing pack - and easily fits my full rack, two harnesses, two pairs of shoes, chalk bag, layers and 2L of water (or a rope and a small rack if is a rope carrying day). The bottom is very durable, and has stayed perfect even though I scrape it on everything. I also love the huge lid because it can fit all the food I want, headlamp, freshette and just about anything else I would want.