NRS Zephyr Inflatable Lifejacket (PFD) - Worn around your waist, the NRS Zephyr Inflatable Lifejacket (PFD) is perfect for flatwater or near-shore stand-up paddling. In the event of a swim, simply rotate the belt until the chamber faces forward, pull the red tab to inflate with pressurized CO2 and secure the inflated PFD over your head.