The more robustly built market value priced ProSelect dog cage. is a better choice if you feel that your dog is of an escape or jailbreak temperament, due to its quality, build, strength, and reliability. And this is backed up with a significant volume of customer reviews. However if you feel it’s too expensive and can’t stretch your budget to get it, then you may like to consider the SmithBuilt crate.
Features: The Petmate Sky Kennel is primarily built of sturdy, high-quality plastic, but it still provides great ventilation to keep your pet comfortable. The front door is made of steel wire, as are the two windows on each side, and the back of the crate is perforated plastic. The door features a vault-style latch and is secured in four places for maximum security.
Update: We traveled quite a bit this holiday season and this portable crate was absolutely awesome! I have seen some reviews about bad zippers but suspect it's due to misuse. You have to raise each side before zipping it -- just common sense, people. Otherwise, there is too much pressure on the zipper. I think zippers on this crate are sturdy. Another suggestion is placing your dog's favorite bed inside. The crate (we have extra large) has plenty of room to add an extra large fluffy dog bed our dog loves. Because the crate folds flat, we place the crate in the cargo area and cover it with dog's bed when on the road. The dog sprawls like a queen! :) When we get to the destination, we unfold the crate, throw the bed inside, and voila -- cozy house that ... full review