The Large Puppy Playpen Crate creates a safe environment growing puppies deserve. Open wire-style framing promotes air circulation. It also helps your puppies feel part of the family with you in their sights. Adjustable floors are easy to change according to puppy height and type of coat. A removable plastic tray also helps maintain a clean area.The spacious design gives thoughtful consideration to your puppy's safety. Metal wiring is finished with a non-toxic plastic coating that cannot be chewed off. Little paws walk on a no-pinch mesh surface secured in place for no slippage. At home or on the road quality construction ensures years of use.