MSR IsoPro Gas Canister 227g

An 80/20 isobutane-propane fuel mix in a 230 g canister size, containing 227 g of usable gas, with total canister weight (fuel plus container) of 374 g. The screw-thread Lindal valve (EN417) is the standard fitting on most canister stoves, so it works with any compatible burner rather than being tied to one stove brand. The propane portion of the blend helps vapour pressure hold up better than pure butane as temperatures drop, giving more reliable performance in cold mornings or shoulder-season trips, though canister stoves in general still struggle below freezing as the canister itself chills and pressure drops regardless of the gas mix. This larger 227 g size suits multi-day trips or groups cooking regularly, where refilling or carrying a spare canister mid-trip would be inconvenient; for a short weekend trip a smaller canister size means less unused fuel weight carried home.