Bag Backpack School

2-4 month ago, maybe longer, Massdrop had a back pack with an inflatable back support. I didn't buy it but I think I was part of the group that asked that it be dropped again. However, I should have made note of it because now I can't remember what b...

well, the only nice one i've seen is the Kelty PK50, bu what I don't like about it is that it's modular for ONLY Kelty products, and that's not cool so come on throw on what your favorite Modular backpacks!