80 20 isobutane and propane blend: Delivers high energy output and reliable performance in cold weather
Low n-butane content (5% or less): Reduces soot and emissions for cleaner burning
Built-in float gauge: Allows easy monitoring of fuel level without opening the canister
Maintains higher internal pressure at lower temperatures: Ensures consistent stove performance in cold conditions
Multiple canister sizes available: Accommodates various MSR stove systems and trip needs
Summarized by Shop
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 ou