The Flatiron also has a large outer pocket. It’s a great size and is in a great spot for storing rain layers, a map, and maybe some snacks.
The other attachment points on the pack seem to be well thought out. While I didn’t have a chance to use the ice axe/trekking pole attachments, the lower attachment is adjustable and seems solid.
There’s also a set of removable compression straps that drop down to the bottom of the pack. Rather than using fastex on both ends, one end has a disc that you then slide through a loop of webbing, which I imagine will be pretty durable. These straps have two attachment point options—one on the corner seam where the front and bottom of the pack meet, and one all the way in the back against the framesheet. This gives you options for a sleeping pad attachment, as well as additional compression if you’re using the pack as a stripped down fast-and-light bag.
Volume
MHM stated 42 liters seems accurate, at least compared to other packs I’ve used. I have a BCA Alp 55 that will hold a little more gear, and an REI Talus 50 that will also accommodate larger loads than the Flatiron. I had no problem stuffing a pretty standard cold-weather overnight kit into this bag, with the caveat that I was using pretty light and small tent and stove options.
Specifically, I was able to fit my zero-degree down bag, air mattress, Black Diamond Mega Light, ground cloth, spare base layers, food for two days, small first aid kit, 60 oz. water bottle, rain gear, MSR Simmerlite and small pot, multi-tool, headlamp, water purification tablets, down jacket, and a couple of other odds and ends. This load maxed out the pack, but if you’re not planning on spending the night out in single-digit temps, you could probably go with less hardware, add a little more food, and spend another day or two out.
Bottom Line
This is a well-designed, adjustable pack with many great features. If you’re looking for a pack that can bridge the gap between weekend trips and day excursions, or if you want a solid all-around pack that can grow with your young backpacker, you should take a look at the Flatiron.