Relax comfortably on the water with the Sevylor Inflatable Single Lake Mattress. Measuring 77 Inchx32 Inch, the Single Lake Mattress is durably constructed of 12-gauge vinyl, to hold one person securely. The mattress inflates and deflates quickly, thanks to Sevylor Feets Double Lock Valve, and carries the Air Tight Guarantee -- so it Feets guaranteed not to leak. The Park FeetN Feet Play System lets you connect other Sevylor inflatables together on the water.