5 stars for this company. Finally someone has thought of the needs of older cats or kittens. I have 2 fifteen year old cats who are in very good health however, I don't think it is necessary for them to jump in and out of a litter box that has a 6 inch high opening. It is totally unnecessary. My cats took to this box instantly and you know cats don't like change!The opening is wide enough and low enough for older cats and kittens to enter the litter box very easily and without strain or effort. The box cleans up beautifully and the matching canopy seals the deal with keeping the litter in the box.This box is a MUST HAVE for older cats, physically challenged cats, larger cats and kittens. It accommodates really all shapes and sizes and the box is big enough for my Lunar who is very, very long and tall.I say BRAVO to this company for thinking "outside of the box" and considering the needs of our older cats! I would HIGHLY recommend this box to anyone, form, functionality and lovely to look at!Seriously, I am so happy I found this and I can't say enough good things about the design. Superior product!!!!