The Deltess PakSeat Backpack is a clever design from a local company that solves the problem of finding a good place to rest when you're out traveling. -- It provides both a clean and dry place to sit, and support for you aching back.
The entire back panel of the PakSeat folds down into a seat -- with adjustable straps to set the right angle. The internal panel has a frame on each side to help support your back, as does the outside seat panel to provide further support (and ventilation) when hiking
The backpack itself has a large capacity (18 x 15 x 7 in., 1900 cu..in., and 3 pounds), with a small outer zippered stash and a pair of pouches for bottles on the front, another front pouch with multiple pockets for small items, and even a small pocket on the shoulder strap. There's also an inner universal elastic sleeve against the back that holds either a laptop or a hydration reservoir -- with a small exit slot for either a water line or iPod headphones.
The PakSeat Backpack is available for $69 in back & gray or blue & gray. There's also a PakSeat Messenger Bag coming, also with adjustable seat.
Find the PakSeat Backpack on Amazon.com