Fuel MSR 450g Isopro Canister

IsoPro fuel from MSR is an 80/20 blend of isobutane and propane that optimizes performance, thanks to the purest isobutane of all cartridge fuels (5% or less n-butane). This formula burns cleanly. At low temperatures, it maintains a higher internal pressure than standard blends of butane and propane, ensuring better cold-weather performance and more consistent output throughout the life of the cartridge. More details