Sherpa Genuine Deluxe Pet Carrier - Airline Approved and Guaranteed on Board - Charcoal Grey, SmallIN CABIN FRIENDLY: Our patented spring wire frame allows the rear end of the carrier to be pushed down several inches to easily fit under airplane seats in compliance with most major airline requirements and FAA regulations PERFECT FOR TRAVEL: Features mesh panels for ventilation, escape proof locking zippers, top and side entries for easy and comfortable loading, waterproof interior base, and a removable machine washable cozy base liner VERSATILE