When fully set up, our Medium size crate is 36 inches long by 25 inches wide and 25 inches tall, and can accommodate the average 45 pound dog. Our Large crate size if 42'' long by 30'' wide by 30'' tall and can accommodate the average 80 pound dog. When not in use, it collapses down to a mere 6 inches! Weighing at 15 pounds, this crate is made for on the go!