This beautifully crafted mobile pen has lots of high-end appeal and is loaded with safety features! For starters, it has a slide-locking system on the door and top, plus a lockable base and casters to ensure your pet is safe and secure in his/her "own" special space. Casters allow you to move the pen easily from room to room without lifting. The plastic base detaches easily for cleaning. The pen's beautiful hardwood construction complements Richell's other fine wood pet products.