I can't say enough about this pack -- 10x better than my old Camelback MULE. The rigid reservoir is perfect, no more uncomfortable bubble on your lower back. There is enough room in the pack for some food, spare tube, pump, multi tool, tire levers and car keys. Sweet separate pocket for phone / music player. The magnetic bite valve attachment takes some getting used to, but once you figure it out you'll wonder how you lived without it. I found the hip belt to be too long, but was pretty easy to modify. The 2 liter capacity is great for shorter rides, but for all day epics I'd suggest moving up to a 3-liter version.