Redundant flotation is the key feature of this air-holding tube. High-density, non-absorbent foam is packed into each chamber. In the rare event of a breach in the polyurethane fabric and a loss of air pressure, the packed foam maintains the chambers shape and 90% of it's flotation factor.
A record locator is an alphanumeric code, typically 6 characters in length, used in airline reservation systems to access a specific record.
PNR stands for Passenger Name Record, it is a unique and automatically generated 6 digit alpha numeric number used by airlines and agents to call up and view current and past bookings. If you contact your agent or airline you will need the PNR so they can quickly locate your booking.