Trailform Chameleon Lite - 36 liter Backpack/ChairThe Best Backpack, Period: The Chameleon Lite stands aloneliterally. No other bag gives you more versatility, accessibility and overall utility WITH the convenience and comfort of an ultra light chair. 36 liter storage capacity 7 storage pockets for organized packing laptop bladder capability removable hip belt add on custom bag inserts (seperate) Weighs 3. 5 pounds, (includes chair frame) Transforms into a chair in seconds, without emptying any