The lanyards is what activates the gas canister once pulled out of the trigger system inflating the airbag and keeping you safe while riding & jumping fences. Compatible only with triggers from 2012 onward. They provide strong safety and security, and an instruction manual is provided for easy installation and operation.. Compatibility: Only compatible with triggers released from 2012 onwards.. Installation and Operation: Comes with an instruction manual for straightforward fitting and use.. It is very important that you make regular checks for wear & tear on your lanyard and replace your lanyard every 2 years dependent on how long and how often you ride for (not just on how many inflation's it has had.) Our vests come with a standard length lanyard 50cm at full stretch.