2 Available Sizes of Pet Carrier: For optimal fit, our M carrier measures 17.5 x 11 x 11 inches, designed for pets up to 15 lbs Flight Compatibility: Medium size is compliant with the under-seat requirements of most airlines. We advise verifying with your chosen airline before travel, as regulations vary. The Large size is versatile for everyday use, whether in a car, alongside luggage, or hand-carried. Reinforced Material: Weve upgraded with bite-resistant & scratch-resistant mesh and thickened tear-proof nylon cloth, to ensure a visible, breathable and safe space for your pets. The high-quality PU leather handle and adjustable shoulder strap with a metal snap hook provide comfort and safety during transport. Thoughtful Features: Cat carriers have 4 mesh windows for ventilation and 3 wide doors that can be opened for easy access. An additional generous side storage pocket collects more stuff like water bottles, snacks and wipes. Equipped with a secure buckle to prevent your pet from escaping. Soft & Washable Mat: Unlike the typical cardboard bases, we utilize a waterproof, hard plastic board for stability. Topped with a sponge and velvet, it provides a plush resting area. Our carrier, including the mat (once the board is removed), is fully washable. Obviously, it is collapsible if you want after drying.