Every Helite garment comes with one canister pre-installed. Get extras right here! After a deployment, your airbag will automatically deflate and be ready to be re-armed with the installation of a new c02 canister.

50cc canister fits Child Small size only 
60cc canister fits Adult Small through Adult regular XL
100cc canister fits Adult L-L and XL-L only

Adventure touring jackets S-4XL take a 60cc CO2 canister, and 5XL-6XL sizes use a 100CC Canister. 

The leather jacket in sizes Small-2XL use a 60CC, and the 3XL-6XL take a 100CC canister. 

The mechanical backpack uses a 60CC canister.