Coleman Single High Airbed AirTight system is factory-tested to be leak-free ComfortStrong coil system provides better support for all-night comfort Double Lock valve is dual-sealed to be leak-free Supports up to 600 lbs.; Approximate Inflated Dimensions: 77.5 x 57.5 x 7.5 in. Approximate Inflated Dimensions: 77.5 x 57.5 x 7.5 in.