Review on Luckitty Cat Sisal Scratching Tunnel: Glow-in-the-Dark Tube with Plush Balls - Collapsible and Luminous for Small Pets like Kittens, Rabbits, and Ferrets by Mary Hovatter

Great idea and very stable construction. The tunnel is soft and plush and the hole on the side makes it much more enjoyable to play with. However this is not suitable for our family as it is not stable enough for our 11 and 12 lb cats. Sisal ends fall off when cats try to scratch them or jump on them while playing. As a result, both ends turned to the ground, the tunnel collapsed to the ground, and the two cats left to do something else. I think the ends need to be made a few inches wider to hold them up better, more useful for actual scratching/playing. I suspect this is the best tunnel for kittens or very small cats who aren't likely to make ends meet that much.