This Bestway Fast Set Round Inflatable Pool at 12ft by 36" would be a good choice. Whilst it comes without a filter pump, it's available as an optional extra if needed. Without a pump though it's even faster than most pools to get up and running. Get an air pump and inflate the upper ring, place a hosepipe inside and as the water rises the ring floats up on it pulling up the sidewalls as it rises. With this type of inflatable pool, getting it running really is child's play.
