

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.
- Three Sizes: Sold in 110, 227 and 450g canisters to meet the demands of any stove or trip. The 110g canister is sized to fit inside the 1.0L WindBurner® and Reactor® Stove Systems.
- 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.
- Fuel Gauge: Built-in float gauge determines how much fuel is left (110g and 227g canisters).
- Recyclable: Consult your local recycling center for regulations.
MSR IsoPro Fuel Gas Cartridge Specification
Weight - 372g
Width - 10.92cm
Length - 10.92cm
Height - 9.4cm
We aim to ship out all orders placed before 2pm the same working day! For shipments in the United Kingdom mainland, we use Royal Mail Tracked 24 service (DPD Next Day for larger items and items that weigh over 4KG). Please see our shipping policy for more details.
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