One of the lightest satellite stoves available, the Primus Express Spider runs on the same technology as the Express stove but provides a much more stable and safe platform. The Express Spider weighs under half a pound and folds up to a sliver. With 7,150 BTUs of output you can boil a liter of water in just over three minutes. This energy efficient stove can go nearly two hours on one 8.1 oz. gas canister so you can pack less and go lighter.