Superb large photography backpack which has recieved numerous positive reviews on YouTube and elsewhere. Google for full specifications, and better photos.

I bought this to compare directly with my 26L version and packed it just once, indoors, so it's virtually as new. Tags still attached.

Unfortunately, it's too large for me - though it could hold my entire kit, plus travel gear, if I was going away for a few days. 

I'm just over 5'6", apparently with a short torso length, and the pack is just too tall to fit me properly - the lumbar padding and the waist strap sit too low on my hips despite the adjustable load lifters on the shoulder straps, so I'll stick with the 26L which holds almost all the necessities, and is very comfortable even fully loaded.