For your consideration is a fantastic inflatable vinyl Mr. Natural pillow. This (and all of my other inflatable pillows available in my eBay store) are unused, old store stock items. This measures 12" x 12" although it measures about 11" x 11" when inflated. These DO hold air! 

These pillows have been in storage for over 50 years, so some of the printed images of Mr. Natural have bled onto the next pillow in the stack. You can see this (faintly) in the photos. 

Please read: these don't have the same types of air nozzles as modern inflatables. Carefully pull the nozzle out from the pillow. After you inflate the pillow, push the nozzle back into the pillow, and it will seal. There is no modern closing flap to the nozzle. 

This will ship folded in a bubble mailer.