It's a boat that fits in a backpack: the LiteWater Dinghy by Klymit, a one-person inflatable pack raft that packs down to 9 x 4.5" and weighs just over 2 lb. Class 2 rated for calm or wavy water with easily avoided obstacles, the raft has a capacity of 350 lb and six tie-down points for your gear. Inflated, it measures 76 x 45", with internal dimensions of 41 x 18". Its stuff sack doubles as an inflation bellows. Two inflation/deflation valves are provided for quick setup. The seat inflates separately for extra comfort and insulation from the water.
One-person pack raft rated Class 2 for calm or wavy water with avoidable obstructions
Capacity: 350 lb
Packs down to 9 x 4.5", weighs 2.2 lb
Dry-bag-style stuff sack doubles as inflation bellows
Dual inflation/deflation valves
Separately inflated seat for comfort and insulation from water
Six tie-down points for gear
210 Denier rip-stop polyester construction