We were looking for a litter box with high sides as our boy's pee would sometimes run over the sides of our litter boxes. Even though our 4 boxes were huge, they were not high enough. Enter the Flip. Purrfect! Both our cats love the new box. And so does Mom! I like that the box is versatile. We keep the top folded back as we use uncovered boxes. The sides are so high, no mess to clean up. Litter and pee stay where they belong. I also like the scoop and the katch litter mat. The Katch is so nice and soft for kitties' paws. With the summer sale, I ordered 2 more Flips and a Modkat and a Lui scratcher. LOVE the modern design of your products.