MilSpec Monkey's Boss shows us the features of the MSM Boss Beaver... "After the success of the Adapt Pack we had some requests for a larger pack with more organization features. With that in mind, I’ve always liked the expandable idea of a beavertail, but on those packs I never appreciated how typically one had to release the beavertail to get to other compartments or when not in use the beavertail could be fairly floppy.

So with those concepts we took the foundation of the Adapt pack so you get those cool guy features, then upsized it and added a self contained beavertail along with plenty of organization options. The result makes the Boss Beaver good at both tactical and hard urban use."