Our SeaLion Europe helicopter lifejackets has been developed based on both pilots' and other crew members' need for ergonomics and simplicity in daily use. We have particularly focused on designing a flexible model that is comfortable to wear and eliminates the risk of strain injuries. Examples are the construction with an entire back piece that distributes the weight, as well as integration of the emergency breathing system SeaAir EBS. This can be mounted flexibly in a molle-system so that it rests against the seat and back in the helicopter seat. Our passenger vests are developed from the same philosophy, with tuning-options and comfort, as well as making the emergency breathing system easily accessible on the chest in case of an emergency.