This crate seems very sturdy and well-made although it seems a bit long for how tall it is. I purchased the large size and while it is an ok fit for my 35# border collie mix she isn't able to completely sit upright in it. I really like the mechanism for how it folds and it folds into a fairly small size for storage. I like the fact that it has a normally latching metal door which is great for training crate games. One other problem is that if my dog sits to the side and leans it seems the crate tries to fold up on her, but this hasn't been a huge problem, however,  I wouldn't leave her in it unattended.

Pros: Sturdy. Great folding mechanism. Metal, latching door.
Cons: Odd proportion...too long for height. Chance it might fold up on the dog if the dog leans on the sides.