Balance & Safe & Comfortability: Two steel rods with upgraded memory metal, running along the top edges top for sturdy steel frame, does not collapse. Resilient fiber brace privide safe when pet moving. 3-layer bottom thicker pad with warm & cold double-sided bring better comfortability for each season. Easy to Carry: With airline-approved design, fits for under-seat dimensions of most airlines. if you are tired of carrying handles, the adjustable shoulder strap help you hands-free carrying. Back strap can fasten the cat carrier to your luggage. The mediun pet carrier is designed for small and medium pets within 15 inch x 9 inch x 9 inch and 15 bounds. Multiple Entrance: The two side entrance and front entrance, easy to access the carrier. Top entrance is perfect for your pet to poke their head out and for you to check on pet. Entrance with mesh ventilation, not only provide adequate airflow, but also easy viewing scenery. Portable & Washable: Collapsible to fit into your luggage. Easy to carry and store. Bottom thicker pad can be removed and machine-washed. Excellent Material: Our cat carrier is made of advanced, lightweight, Non-toxic, anti-scratch polyester fabric material. More durable than most of collapsible pet carrier in the market.