??¡¾???????????????? ???????????????? & ????????????????¡¿ Four 360 degrees rolling casters allow you to easily move the kennel around your home,Two of the wheels can be locked to keep it firmly in place. Large dog kennel double upgrade bolt locks design for anxiety dog, keep dog in contain, avoid damage or injury. The dog crates double door design is not only convenient for dog in and out but also good for you to interact and feed with your dog.