I bought this pack back in February, with some skepticism (as there were no reviews), but man am I glad I did. I bought the large version 37L, and used it on a ski trip to Colorado right away. Aside from the fact that it was the only piece of luggage I needed (aside from my ski bag), this thing fit all my clothes for the 4 day trip, I also used it do do a few backcountry trails. The pack has an removable aluminum rod insert, as well as a removal plastic mold, but I don't know why you would ever take them out, they make the pack stable as hell, and makes it extremely comfortable. The straps on the packs shoulders allows for a lot for you to adjust it anyway you like, which is essential since weight can play a big factor. My only issue with the pack is the pockets located on the hip straps are meshed, and can't be used to store wallet's, or valuables, but was great for my sunglasses, chapstick, etc.
Highly recommend.