This is the second time I've purchased these. My first purchase has been so liberally used to transport my cats to and fro that they wore out. That said, I will say there is one tragic flaw: The top little metal rod, that helps give it its form, broke through the material - after having it for years. Is it a deal-breaker? No, but a canvas reinforcement sewn in would be a boon. Still I give it 5 stars for its lightweight design. It makes "lugging" even my 16 lb cat manageable. And each of my 5 cats seems to like them.