Air-Lever option has many advantages over regular airbeds. With regular
airbeds a hammock effect is created because the body sinks into the bed
and air displaces mostly under the legs and to the sides of the body.
With Strobel's, the torso length of the tubes concentrates the air
displacement to the lumbar area, and the tube design prevents
displacement to the sides focusing support to the back. The Lever-Spring
system is on top of the tubes and air displacement enhances the Lever
action. Also the Lever-Springs balance the action of several tubes. In
addition Strobel's design has no pumps, motors, or valves nothing to go
wrong! Strobel's air tubes are foam filled and factory sealed. Even if
an air tube someday fails, the bed does not become unusable due to the
foam filling. Proper spinal alignment in any sleeping position,
Strobel's Patented system gives you the best back support.