Designed for indoor and outdoor use Bed Height (Single Layer): 10 in. Bed Height (Double Layer): 20 in. Tritech Internal Support System is 44% more stretch resistant, retains 19% more pressure and is 18% stronger than PVC Contoured vertical I-beam construction 3-in-1 air mattress can be used as 2 Twin air mattresses, a King air mattress or a double layer Twin air mattress Connected with adjustable buckles Comfortable flocked sleeping surface 2-way interlocking quick release valve for fast, easy inflation & deflation Contents: 2 connectable air mattresses, repair patch. WARNING! BABIES CAN SUFFOCATE. TO PREVENT SUFFOCATION AND DEATH, NEVER PLACE A BABY 15 MONTHS OLD OR YOUNGER ON THIS PRODUCT. CHILD ENTRAPMENT HAZARD! ALWAYS POSITION PRODUCT 1 FT OR MORE AWAY FROM OBJECTS SUCH AS WALLS AND DRESSERS TO PREVENT A CHILD FROM BEING ENTRAPPED. KEEP PRODUCT FULLY INFLATED WHEN IN USE. SEE INSTRUCTIONS FOR ANY ADDITIONAL WARNINGS.