Gently used and well cared for - Inflated twice. CO2 will be removed to ship, does not come with cartridges. The Zip’In 2 air vest is equipped with a mechanical system that arrives ready to use and is reusable. All you need to do is replace the CO2 cartridge with a new one of the same capacity. With its ultra-fast inflation speeds of 100 ms and large inflation volume of between 14 and 28 L (depending on the size of your airbag vest), the Zip In airbag vest ensures protection of the back, pelvis, hips, and vital organs.