150 Newton buoyancy for coast and off-shore use. - Neoprene collar - Crotch strap - Practical YKK QuickBurst zippers - UML Pro Elite Sensor Automatic trigger with three year maintenance cycle - CO² cartridge: 33 grams - Inflatable by mouth - Window for checking the mechanism and cartridge - Antimagnetic metal buckles - D ring for kill switch - Safety whistle - CE, ISO 12402: for coast and off-shore use The pressure capsule and water-reacting component of inflatable vests need replacement from time to time, even when the vest has not been inflated. Inflatable vests are only safe when worn and serviced properly! This item cannot be delivered to countries outside of the European Union because of restrictions regarding pressurized items in airfreight. Automatic life vests fill their air compartments automatically with the CO² cartridge when the mechanism is submerged. If needed for some reason, the compartments can also be inflated by blowing through an integrated air hose.