Never Opened. From smoke free environment Sherpa Black Expandable Airline Approved & Guaranteed On Board Travel Pet Carrier! This carrier is perfect for all modes of travel, whether by plane or car, for short trips or vet visits. The patented spring wire frame allows the rear end to be pushed down to fit under seats in compliance with most major airline requirements. - Comfortable and Secure: The carrier features mesh panels for ventilation, escape-proof locking zippers, top and side entries for easy loading, waterproof interior base, and a removable machine washable faux lambskin liner for added comfort. - Versatile Use: The pet carrier can also be used as a soft-sided crate for regular outings and vet visits with cats and small dogs. The expandable side walls and liner allow for ultimate comfort. - Spacious Storage: Includes a large side zippered pocket to store treats, leashes, poop bags, and other small accessories. - Perfect Fit: Measuring 19.5" L x 11" W x 10.5" H when fully extended and fits pets up to 16 inches length x 10 inches height and up to 16 pounds.