This is Katziela® Bone Cruiser Rolling Pet Carrier bed with wheels. It was used maybe once or twice. Please note that this carrier has been modified. Originally it came with a retractable pull handle but since it was made out of plastic it quickly broke and i was unable to replace handle since manufacturer no longer carried the part. Since its such a nice carrier and was fairly expensive i incorporated a new detachable dog leash to the bottom so the carrier can be pulled with ease. I feel this is a better design and better than the original design. Plus if you ever forget your dog leash and simply detach the one from the carrier and use that