Delta Deluxe pet carrier by sherpa, underseat dimesions will vary, we strongly recommend that you check with the airline prior to departure. Delta carrier has Locking zipper to keep pet safely inside, roll down flaps for privacy, inside leash ring, pet identification tag, mesh panels for ventilation, top and side entry and fits comfortably under most airline seats. Bag can be spot cleaned, machine washable faux lambskin liner, should strap included, folds flat for storage. Free sherpa go dog mini baby dragon toy with purchase, you must buy from this listing to get your free baby dragon toy. Sherpa bags are soft sided and can be smushed and manipulated in putting under the seats, there are some advantages to having a soft sided carrier vs a hard plastic crate when traveling on planes.