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.
Features:
- 80/20 blend of isobutane and propane delivers superior performance throughout the life of the canister and in colder temperatures.
- Zero-maintenance combustion.
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