Made of high quality plastic material which is strong and sturdy enough to support the weight of any size cat. Effectively trains your pet to use the toilet itself. Groove design, easy to take off the toilet seat. Includes 5 learning stages to help your cat know how to go to the toilet by itself. This cat toilet trainer kit will keep your home free from nasty germs from waste and litter. Ideal for older cats, large cats, kittens over 3 months and multiple-cat households. Works with all sizes of u-shaped toilets.