We bought this donut before we brought our kittens home in 2022. It was their safe hiding spot on their first day with us (top pic on the left), and it was their safe hiding spot when we moved three years later (middle pic on the right).
They have used and abused it every way two goofy cats can - they even intentionally mash the center down with their (now) giant bodies when we open it up for them so they can use it as a pillow. But, there's almost no wear and tear outside of the hair they've left all over it.
They don't fit in it quite the same way they used to, but they still love to nap, hide, and play in their donut four years later. Can't recommend this product enough!