MSR IsoPro is a performance-boosting, eighty/20 mix of isobutane and propane, with the purest isobutane (five% or less n-butane) of any canister fuel. This blank-burning formulation maintains upper internal pressure at lower temperatures than same old butane/propane combinations, delivering superior cold weather performance and more consistent output over the lifetime of the canister. 8oz canister.
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- This item: MSR IsoPro Fuel 8 oz.$39.95