Please be aware orders placed now may not arrive in time for Christmas, please check delivery times.
MSR IsoPro Fuel 8 oz.
Cold-weather performance
Maximum efficiency
Minimum consumption
For maximum efficiency and minimum consumption, use our high-performance propane / isobutane four-season blend. Propane provides higher vapor pressure for better performance in cold weather. Isobutane provides more constant pressure as the fuel level gets low.