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.
- Weight (Standard): 0.5oz
- DisplayWeight (Standard): 1 lbs 7 oz
- Style: 4589
Prop 65 A (General): This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.
https://mtn-sports.myshopify.com/pages/prop-65-frequently-asked-questions