Note that some authorities recommend adding 4 to 6 inches on top of your dog’s length when selecting the proper crate size, instead of the 2- to 4-inch guideline we prefer. This is fine if you’d prefer to scale up the crate a little bit, but understand that it is not a good idea to provide your dog with a crate that is too large. Doing so will eliminate some of the benefits crates provide (more on this later), so stay in the 2- to 6-inch range.
Also, the crate is made out of plastic, which is durable and washable. The darkness inside the crate makes it an appropriate bed to use if your dog has trouble sleeping, with one commenter noting that it was capable of housing her dog as though he had a little den. This kennel is also good for dogs that fancy themselves escape artists. The heavy duty fasteners on the kennel, locked door, and thick outdoor posts prevent them from getting out on their own accord.
Addendum added January 28, 2013: My vet had never noticed these carriers because I had never put one up on the exam table until my last vet visit. She looked at it with interest and totally concurred with my opinion of having a small, but open carrier for my two (panicky) cats. She has seen more than a few overheated pets in too enclosed carriers. Since I live far from the vet I always carry spare towels for the bottoms of the carriers and she found that the "stable floor covering'* I use was an additional comfort feature for my pets long trip to their appointments. (I just ordered the larger size of this carrier for my "Phat Kat" and will donate her previous carrier to our local animal shelter.)