MSR IsoPro is a performance-boosting, 80/20 blend of isobutane and propane, with the purest isobutane (5% or less n-butane) of any canister fuel. This clean-burning formulation maintains higher internal pressure at lower temperatures than standard butane/propane mixtures, delivering superior cold weather performance and more consistent output over the life of the canister.

Due to hazardous materials shipping restrictions, we are unable to ship MSR Fuel Isopro. In Sore Pick Up Only.

3 Sizes availabe for your convenience.
4 oz. canister has a smaller diameter for optimal fit inside the 1.0L Reactor Stove System.
8 oz. canister is short & wide providing good stability on uneven surfaces.
16 oz. canister is big enough for long trips trekking, canoeing and biking.
Improved Performance: 80/20 blend of isobutane and propane delivers superior performance throughout the life of the canister and in colder temperatures.
Clean-Burning: Zero-maintenance combustion.
Recyclable: Consult your local recycling center for regulations.

The FlipFuel is a tiny device that is tackling one of backpacking’s most universal problems — the issue of half-full fuel canisters.

MSR Isopro Fuel Canisters - 3 Sizes