In original packaging item, may require some assembly. See link for more details:

Size: 18" 

Note: Tested and turns on, has some warehouse dirt from being tested, see in house photos

https://www.target.com/p/intex-elevated-18-34-pillow-rest-queen-air-mattress-with-internal-pump-off-white-blue/-/A-91988639#lnk=sametab