4 In 1 Quick Airbed, 4 Beds In 1, Use Separately As 2 Twin Beds, Zip Together For A King Size Bed, Zip, Stack & Snap Together For A Twin Double High, Conveniently Fits Standard Twin Or King Sized Sheets, ComfortStrong Coil System For All Night Comfort, Soft Plush Top For Added Comfort, Coleman Double Lock Valve For Easy Inflation/Deflation, Puncture Resistance.