REINFORCED VENT

A vent is provided herein for use in a closed container, the vent comprising at least one protective fluoropolymer layer and at least one reinforcing layer, wherein the at least one protective fluoropolymer layer at least partially penetrates into the at least one reinforcing layer, wherein the at least one protective fluoropolymer layer has a carbon dioxide (CO) to water (HO) selectivity of at least 600 cm/g at 30° C. and a COpermeability of at least 1,000 cm/(m*24 h*atm) at 30° C. as measured using methods described herein.