I bought this pack for my PCT thru-hike. I got a 40L with two hip belt pockets, a Y strap, a shoulder pocket, elastic on the sides and front, and the bullet net. It really is the perfect backpack. I love everything about it. It’s extremely durable and is still going strong after my hike. The material is much more water resistant than I anticipated. The bullet net allows you to store a ridiculous amount, and the elastic over it allowed for even more storage and kept everything in place. The load lifters are incredibly effective — maybe my favorite thing about the pack. You can really, really adjust where the weight sits. And I LOVED the simplicity. It doesn’t have any bells or whistles that will get in your way. It has everything you need, and only what you need. As a lifelong Osprey girl, I was very nervous about this, but I absolutely loved the simplicity and ease of use. I only had two issues with it on my entire hike; here they are: I found the water bladder section to be very difficult to use. Honestly, it was so hard that I still think that I was using it wrong. But I ended up just switching to keeping my water bladders in the water bottle side pockets and threading the tubes under the load lifter straps, which worked super well. No complaints there! And the top buckle on the Y strap broke. This is an issue that other people I met had as well. BUT! Tom was incredibly helpful in dealing with this issue. When I sent my support request, a team member responded within an hour or two. Tom responded shortly after that with a personal apology and specific ideas to resolve the issue until I could get a replacement buckle in the mail. They then sent a couple replacement buckles, which arrived very quickly at the next trail town. That experience only reinforced my trust in Atom Packs. Seriously, get this pack. I didn’t meet one person on trail who regretted their Atom Pack, but I did meet lots of folks who said they wished they had one.

My family bought me the 60l custom Mo for my 50th birthday, and I have to say I was pleasantly surprised at the level of comfort. I used it for the West Highland Way last month and it did the job perfectly. It took a day or two to get used to the back sitting against me as all my other packs sit an inch or two off my back (ventilation) and a little playing around with the internal frame to get it dialled in, but once I got it right it was great. Even the man with the sore feet in Fort William tried to steal it.

The “MO” has been the perfect pack for me so far. I have the 40L with the extras. (Bullet net, Avo and hip pockets) a pack liner is a must!
I am currently doing a thru hike in New Zealand and have been on trail for over two week.
Would definitely recommend this pack!

I do believe the bullet net is a must for someone who needs a little more space for easy to grab items.
The avocado pocket is bigger then you think I fit a full first aid kit inside with collapsible bowl and cup. Love it!

I bought the pack to have a more lightweight alternative to my other backpack and it fulfills its role absolutely perfect. It's sturdy, lightweight and still has enough pockets (got the hippocket and shoulder pocket) for me to perfectly organize my gear and have the things I might need quick close to me. The shipping process also went super well and while my pack was being produced I got updates so I knew everything was going well. The only problem I had was that the hip belt rubbed off some color on my shirt when I wore it for the first time and a tiny bit the second time. No problems after that and everything was clean again after washing once, so not a big problem just something I noticed.
I'd definitely buy it again and if someone else from Germany is wondering about shipment you don't have to, everything went well.

I ordered two custom The Mo/The Prospector 50L packs—one for my wife and one for myself. The packs were quite comfortable after adjusting the backplate, which took us about 3 hours per pack to get it right. We discovered that when making this adjustment, you need to account for the thickness of the lower hipbelt cushion, which wasn’t mentioned in the instruction video.

The hipbelt pockets were essential for me, as I needed the extra storage for snacks and phone, but they rubbed against my lower arms while hiking. This caused red irritated areas on my lower arms. A potential improvement would be to move them closer to the pack, which could be done by adjusting the attachment points of the hipbelt pockets (during the manufacturing proces). Additionally, angling the upper front parts of the pockets and adding extra attachment points might help position them closer to the body and out of the way of normal arm movements.

On our packs, we added the G-hook, which made opening and closing the Y-strap easier, but it caused some damage to the Y-strap after just 8 days of hiking. Because of this, I’m not sure I would add that feature again if I were to order another pack.

We also added the bottom pocket. Because of the weight I was initially unsure about it, but it turned out to be very useful for storing dirty laundry and garbage. This saved us time since we didn’t have to pack and unpack these items from the main pocket regularly. I highly recommend the bottom pocket—it’s a great feature!

One of our packs has a bullet net, while the other has a Dyneema front pocket. If you're using the pack with just a liner and no pack cover or poncho, I recommend choosing the bullet net, as it dries much faster than the Dyneema front pocket—an important advantage in wet conditions. It’s also good to know that the bottom pocket has a similar issue in wet weather, so keep that in mind when choosing your rain gear. In my opinion, a pack cover doesn’t work well. Instead, I used a Nylofume pack liner (which is very lightweight) along with a poncho that goes over the pack as well for better protection.

Aside from the improvements mentioned above, we found this to be a great pack and one that’s easy to love!"