edit: The PetKit Pura Max litter tray is designed to accommodate cats of different sizes, but is mainly recommended for cats weighing up to 8 kg and aged over 6 months.

If you're referring to compatibility with Main Coon cats, which are generally larger and heavier than average, it's important to note that the Pura Max can accommodate cats up to 8kg. However, for larger Main Coons, it may be a little cramped, especialmente if the cat exceeds this weight limit or is significantly larger than average.