This is a great crate that combines the functional (cavey) nature of a plastic crate with the portability & openness of a collapsible metal crate, without having to purchase an additional cover. It is also lightweight, which you don't get with any other type of crate.The only complaint I have is taht I'd like to have an optional maybe velcro side panel to put on if you don't want them to have so much viewing capability...Of course, this crate is not to be used with chewers or those who will claw/tear at it (it won't withstand that). It is a good idea to crate train your dog in a similar fashion to the instructions provided with your crate or by your trainer!