We bought this medium sized crate for our 20lb, lazy dog. She had been hoteling in our other dog's crate, but since he needed it back, we decided to purchase this crate. The first time we put her in the crate, within the hour she was able to bend the bars on both doors and get out. She has never done this before or since. The bars are extremely thin and flimsy. ADVICE - PURCHASE ELSEWHERE. When I wrote to the vendor explaining the situation and wanting to return the crate as defective (what crate marketed as medium size can't hold a 20lb dog????), I received an email stating that since the crate was damaged by the dog, it was nonreturnable. WASTE OF TIME AND MONEY. Stay away from this product and vendor.