Sherpa Ultimate On Wheels Pet Carrier utilizes easy-glide recessed wheels for smooth, quiet, steady motion. Takes the weight off your shoulders. Convenient detachable handle with padded grip for extra comfort can also be converted to an adjustable shoulder strap. Includes Pet on Board flag for better visibility. New travel bed tray slides in and out and includes a soft, cozy, machine washable, replaceable faux lamb's wool liner. Mesh panels and roll-up flaps on three sides for ventilation and ultimate privacy for your pet. Front opening and U-shaped top zipper for top and side entry. Locking zippers. Brass hardware. Inside leash ring. Seat belt strap. Fits comfortably under cabin seat. Approved on most major airlines. Rolls flat on four wheels, no tilting to provide your pet with a comfortable travel experience. Sherpa Travel gives pet parents the best of all worlds: innovative products, stylish designs, and exceptional value with a variety of travel carriers, leads, mats, straps, to meet a pet's and pet parent's needs for travel. Sherpa products are designed to meet child safety standards. Please read all packaging instructions, warnings and cautions upon receipt. Packaging contains small parts, discard after opening.