Brunton Flex Foldable Stove The coolest stove on the planet is one heck of a cooker. Weve answered the canister stove users needs with the ideal compact, lightweight butane stove. With the award-winning simmering ability of old, the new Flex adds sturdy pot supports to the mix for the ultimate set-up. Built for the true-backpacker, you dont need awkward accessory parts like unsturdy cups and pots to make it purr. At a mere 3.4 ounces, you get 12,000 BTUs of bliss for the best cooker, fryer and warmer out there.