Crewsaver Replacement CO2 Gas Bottle / Cylinder for Lifejackets 23g

Different size gas bottles are required for different sized jackets and different levels of buoyancy. You must ensure that the correct weight gas bottle is being ordered so that your lifejacket, when inflated, is filled with the correct amount of CO2 gas. If you have no gas bottle then your lifejacket should have printed which size gas bottle it takes on the bladder next to the firing mechanism.