The Nautica Plushaire Twin Size 15" Express Air Mattress provides a reliable, comfortable bed when you need it. Stable, cooling and contouring, this inflatable bed stays as firm as you want and wont deflate while you sleep, thanks to the proprietary Sure-Lock spring-loaded pump locking system that holds pressure and will not leak air. Vertical beam construction prevents the bed from rocking, swaying or creating side-to-side motion. Heavy-duty puncture resistant DuraTex fabric features a velveteen surface to hold sheets in place. Inflate or deflate this air mattress quickly and adjust to your desired firmness with the dial.