Onyx 24g Essential Manual Inflatable PFD Re-Arm Kit [135100-701-999-23]24g Essential Manual Inflatable PFD Re Arm Kit Inflatable life jackets can be reused after each inflation but the CO2 cylinder needs to be replaced before using again. Use an Onyx rearming kit to keep yours ready. It is recommended to purchase an extra rearming kit to try out your inflatable life jacket and become familiar with its operation. Be sure your inflatable life jacket is properly armed and ready to use before you head out on the water.