If you are concerned that your Hit-Air vest is damaged and it is not over 5 years old, we can direct you to the authorized Hit-Air service provider/importer to inspect your vest and insure it is still functioning as intended. During inspection, your Hit-Air vest is checked for proper inflation and deflation and the outer material is checked for damage. If they encounter any issues with your vest, they will call you to discuss next steps for repair or replacement. Hit-Air recommends annual inspection and will not service a vest over 5 years old. They can perform minor repairs. The service provider will direct you to print out their downloadable service form, fill it out, and ship it to them with your vest. After inspection and servicing, they will ship it back to you within 5-7 business days after receiving the vest. Your vest is shipped back to you with a new CO2 canister. The cost for this service is currently $70 plus shipping. You may also choose to test your vest by manually deploying your vest. Note that it requires at least 66 to 77 pounds of force to activate your vest, so it may require a strong person to quickly yank the lanyard with one hand while pressing against the vest with the other hand.