Solid cage but latches can be opened by dogs. You'll need additional security measures to keep your dog in. Instructions for assembly need improvement. They aren't explicit enough. One of my bars was bent and scratched so will need to paint it to prevent rust. Otherwise, solid. My 70lb pitbull latched down on horizontal bar and wasn't able to break or bend it. The bars on the floor are far enough apart for your dog to slip his paw through so our other dog, a pit mix, was nervous in the cage.