Replacement CO2 canister for the Point Two air jacket system, engineered to deliver rapid inflation for quick protection in a fall. Canister sizes and weight: Available in 60cc (185g) for Child L and XL / Adult S-XL, and 50cc (151g) for Child Small and Medium. Weight is engraved on the canister and listed in the user manual. Compatibility and serviceability: Designed for Point Two jackets. If your jacket was manufactured before 1 Oct 2012 with a screw fitting, it is not serviceable. From Oct 2012 onward, jackets use a bayonet fitting and are serviceable; ensure you have updated trigger components. Upgrading to a newer jacket is recommended (50% off with certain purchases). Spare canister: Always carry a spare canister so you can reset and ride again after deployment. Weight guidelines and lifespan: Canisters should be weighed annually. When stored per the user manual, they can last up to 5 years. Weight is engraved on the canister and listed in the manual. Service and guidance: If you’re unsure whether your jacket is still serviceable or you need help choosing the right canister, please get in touch for expert advice. Larger canisters inflate faster, enabling quicker protection in a fall. We recommend your canisters are weighed annually - if stored according to user manual they can last up to 5 years.