I like the size of this pack. I picked it over the XL version because, the XL extends too tall vertically for my taste. I was nervous the sleeping system compartment would be too small on this one, but was pleasantly surprised that it was able to fit my USMC sleeping system (to include the tan sleeping bag, bivvy sack, and poncho liner in a compression bag). However, I still wish the zipper opening for that compartment was larger. Additionally, I wasn’t expecting to get much use out of the zipper side flaps, but found that they fit a set of Frog Fins perfectly (although they do constrict the internal storage compartments some). Sizing the pack was very simple, and it feels great on my back. Overall quality pack, it’s very versatile and gives you alot of options for storing team gear and quick access items in external pockets.