This is great to transport a small/medium size cat, dog, rabbit, chicken, reptile, or bird.  Large size metal grating allows for excellent air flow and does not overheat. Lockable and easily washed and cleaned.  Very easy to carry. The clear walls allow sufficient lighting to prevent the fear of darkness for the animal. Not recommended for rats, or squirrels or anything that knaws or nibbles. Size is approximate. NEW AS IS. There is some cedar chip dust leftover from photos. There has NOT been an animal in this enclosure.