Freejump 50 Cc Airbag Vest CartridgeCartridge for the Freejump airbag vest Cast steel with welded valve for maximum safety and reliability Compatible with children's sizes S and L of the classic airbag vest Certified to standard NF S 72 800 2022 Compatible with Freejump airbags only Ensures optimal inflation of your vest Inflation speed of 80 ms to 130 ms depending on airbag size, making it one of the fastest on the market