Isopro Fuel Size:4oz Reconceived with earth-conscious materials

Reconceived with earth-conscious materials

and over a decade later we have redesigned this best seller to help take your hang to the next level

wicking interior storm flap and zipper garage for chin comfort

Armed with incredibly tough 1

Includes two 4-oz bottles

Isopro Fuel Size:4oz Reconceived with earth-conscious materialsMSR 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.