Description of CamelBak Field Case Hydration Pack:
Ever wonder what life would be like if you were a conjoined twin? Score the Camelbak Fieldcase and find out. The Fieldcase adapts to almost every activity we can think of. It's so handy, you'll probably Use its laptop sleeve and padded backpack straps during your bike commute to work or school, tuck the shoulder straps away and carry the bag briefcase style when you step onto a crowded train, and on the weekends, stash your hydration bladder in the laptop sleeve and hit the trail or the slopes. Camelbak even included a Bite Valve Garage, a fleece-lined sunglass pocket, and padded side pockets for binoculars or an iPod. Strategically placed compartments and cargo space make it easy to locate your gear or office supplies.
Bottom Line: The Camelbak Fieldcase—so convenient, you’ll never take it off.
I'm not sure about a conjoined twin, but this bag is versatile and well thought-out. The water bladder is separate from the laptop area (this is a bit confusingly-worded in Backcountry Outlet's description), so in theory you could use both at once for a long bike commute to work, etc. Because of the shape of the bag (wider than it is tall), wearing it in the backpack configuration is a bit odd-looking but gets the job done. The shoulder strap for messenger-style carrying is very nicely padded and the top carry-handle is convenient too.
I cannot seem to find a padded sunglasses pocket, but the rest of the pockets are great and provide many organizational aspects (I wish there were more pictures of the interior online, since I ordered it blind). The front organizing pocket has a key clip, pen slots, and pockets for other small accessories, while inside the bag there are more pockets available - but these are flat so if you don't need them they stay out of the way. I like that the backpack straps stash within the bag and the shoulder-carry strap is also removable and stashes in the bag so you can hide them when you don't need them.
For people expecting a sleek Camelbak design, be aware that this is a large bag for carrying items as well as water. My one major complaint is that the laptop sleeve barely fits my 15-inch widescreen HP laptop, so accessing it is difficult but not impossible. Overall a lot of bang for your buck!