This is my favorite daypack, purchased to replace an *old* TNF Recon from back when they were good (mold in storage finally did it in). This is a very satisfactory replacement. It has a few minor flaws, which I'll get into, but I'm being very picky in this review... I haven't seen many reviews on what this pack is capable of holding, so here's mine. In the pictures it contains: -17" Lenovo laptop. Yes it fits in the laptop sleeve and the bottom corners are padded and isolated from the ground. -26 oz Yeti rambler water bottle. It *will* fit a 32 oz Nalgene, despite what some reviews say, but it'll be a tighter fit. Also fits 40 oz Thermo/Hydroflask, since those are the same diameter as a Nalgene. -Change of clothes including pants, polo shirt, belt, socks/undies, and light sweater. -3 notebooks: 1 legal pad, 2 journal/steno pad size -Phone charger, power bank, cables -Nike Romaleo 2 squat shoes (size 12) in expanding pocket (more on that later). -Neoprene knee sleeves (big thick ones), wrist wraps, Fat Gripz, and a few other small pieces of gym kit. -Small med kit/office stuff including pens, multitool, med shears, reflex hammer, flashlight, meds/bandaids, tape, folding knife, etc. I could have fit a bit more in there like my rain shell, laptop charger and mouse, but I didn't need those today. I was genuinely surprised by the pack being able to fit the 17" laptop and Nalgene, since specs and reviews say otherwise, but they'll fit just fine. The main pack material is a canvas or duck cloth with a softer hand and what might be a wax coating on the underside. The flap has a layer of synthetic material on the underside. Durability remains to be seen, but build quality is excellent. I haven't tested water resistance yet, and will update when I do. I have mixed feelings about the expanding pocket. It's definitely able to fit a pair of shoes or a bike/climbing helmet, but doing so requires the side zippers to be all the way down, exposing the MOLLE such that if you store pens or loose things there they're more likely to fall out. Those reporting zipper failures are likely trying to use the zippers to partially contain bulky items in this pocket, putting a ton of stress on them. The zippers should be all the way up or all the way down, and supported by the side straps in any case. To be nit-picky, I wish the pockets in the main compartment were a little different. Maybe 2 zipper pockets instead of the one. The open vertical pockets aren't very secure since the pack tends to fall over and dump small items that aren't clipped in. Oh, and for a pack where the main access is through the top, it doesn't stand up too great. Other quick thoughts: The pack rides high on my back and is too short to fit a waist belt, so I don't miss it. Concealed carry + laptop would probably be pretty uncomfortable. I dislike off-body carry anyway, though. It's surprisingly light. All things told, these are minor gripes and this is a solid pack and has become my daily carry for work and light rec. I especially like that it can fit all my stuff including my 17" work laptop without screaming "tacticool" and having MOLLE cover every surface (looking at you, 5.11 Rush 72) so I don't feel like I stand out unnecessarily when carrying. Would recommend.