MSR Fuel Canister 3.8 oz / 110 g

  • Product Number: 4026 - 408081

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 do not sell fuel online. Pick up only!


  • 4 oz / 110 g 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 (4 oz. and 8 oz. canisters).
  • Recyclable: Consult your local recycling center for regulations.


  • Weight: 7.4 oz
  • Volume: 3.8 oz / 110 g / 118 ml
  • Dimensions: 3.5 x 3.5 x 2.7 inches