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

Reconceived with earth-conscious materials

adding a few more travel-friendly features for life on the move

and the snapback adjustment gives you the ideal fit

windproof membrane bonded between a thick and fuzzy outer layer of -pile sherpa fleece and an interior

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.