FreeJump Airbag Vest Cartridges -CANNOT BE POSTED, IN STORE ONLY

Freejump Airbag vest cartrige. -PLEASE NOTE THIS ITEM IS FOR IN STORE PICKUP, CANNOT BE POSTED Please make sure you select the appropriate size for your vest Choose your capacity : 60cc for airbags : XXS Regular Fit, XS Regular Fit, XS Slim Fit, S Regular Fit, S Slim Fit, M Regular Fit , M Slim Fit, L Regular Fit 85cc for airbags : L Slim Fit, XL Regular Fit and XXL Regular Fit    How to replace your cartridge ?