Locking zipper to prevent accidental escape. Mesh panels for ventilation, includes a seat belt security strap and shoulder strap. Top and side entry. bag can be spot cleaned. Removable machine washable comfort liner. Side storage pockets for leash and keys. safety strap to attach to luggage or car seat belt. Bag Dimensions 18 L x 10.5" high x 11" wide. bag weight 3.6 lbs. size medium all black with black trim. For pets up to 16lbs and 16" in length and 10" in height. please measure your pet before ordering your pet must fit into the carrier for you to consider the weight. Pets come in different shapes and sizes you must measure your pet. To measure for Length take tape measure from nape of neck or collar area to base of tail not including the tail this is your length. for height measure from floor to top of shoulder. remember pets must lay down in carrier this is not a carrier they stand up in. This carrier is airline approved. Please check with your airline to see if it meets size requirements as the airlines have different size requirements depending on type of plane etc"