My seat fits on the toilet and has a solid plastic frame to it with a padded seat on and the cup at the front which I use for both boys and girls cause it prevents them from sliding off till I take them off. It just sits on the back as in it is thick enough to balance and I store it behind the toilet so it is barely seen. I wipe it with antibacterial wipes between users and then wash on the weekend. I wipe off the cup area with toilet paper after use and then wipe down. Takes only a minute while child attempts to pull up pants. When done I help them finish.