MSR IsoPro Canister Fuel

MSR IsoPro is specifically formulated with a 80/20 blend of isobutane and propane, and contains the purest isobutane (5% or less n-butane) available. This fuel is designed to maintain higher pressure at lower temperatures in comparison to other butane/propane mixtures, resulting in improved performance even in cold weather. The 8 oz. canister is able to meet the demands of any stove or trip and has a built-in float gauge to check fuel levels. Clean burning and zero-maintenance combustion are additional benefits of this fuel, which is recyclable depending on local regulations.