Love that this is one piece and you can't see the trap.  Easy to clean and efficient.  Love the toilet itself, but the shipping was a nightmare.  We needed three.  I ordered three and two were broken.  Ordered two more and one was broken.  Finally gave up and bought one locally for the third one.  Make sure you order it in plenty of time to order a replacement.  Wayfair was great with the return but this was so frustrating.  They only ship directly from the manufacturer on the East coast.