PLEASE NOTE INTERIOR SIZING & PET MEASURING GUIDELINES BEFORE PURCHASE - Best Fits Pets up to 16"Lx10"H and up to 15lbs. Airline capable carriers are designed for pets lying down, so your pet may not be able to stand. It is best to measure your pet while comfortably laying down, as that is the typical position during flight PLEASE KEEP IN MIND that we show the exterior dimensions as well as approximate interior dimensions to best portray the usable interior space for your pet. The interior space will be less than exterior due to the fabric thickness and plush faux fleece padding. The rounded contours of the tote design means interior dimensions are approximate and shown at their maximum measured points AIRLINE REQUIREMENTS - Always keep in mind each airline sets their own specific requirements, and they can even vary from their domestic, international, and shuttle services so it is always advised to check with your airline of choice. All will require your pet to be comfortable in the carrier, and to remain under the seat in front of you. All prefer a soft sided carrier for its adjustability and we have designed our carrier to comply with major airline configurations STRONG & WATERPROOF - Weighing in at only 2.7 lbs, Designed with Breathable Mesh on all Sides for Proper Ventilation * Removable Fleece Travel Bed with Plywood Base for Additional Support * Padded Shoulder Strap * Name Tag * Zippered Mesh Storage for Treats, Meds Papers * Seatbelt Attachments * Included Mr. Peanut's Cool Logo Storage Pouch, Folds to 3" for storage DESIGNED WITH with a Ventilated Top to meet all airline regulations of under forward seat compatibility including Delta, Southwest, United, American, Virgin and others"