EXPANDABLE AND COLLAPSIBLE TOP - Measuring 18 x 11 x 11 inches (LxWxH), our sturdy cat carrier features an innovative pop-up top that adds an extra 3.5 inches of height, reaching a total height of about 14 inches when fully extended. It can be conveniently compressed to slide under the seat, while also providing your pet with sufficient headroom to stretch or stand during travel CABIN-COMPATIBLE - This softsided pet carrier cage comes with an adjustable shoulder strap and a luggage handle sleeve, making it easy to transport through the airport, It complies with the guidelines of American Airlines, Delta Airlines, and United Airlines. We recommend checking with your airline before purchase SAFE TRAVEL - Featuring auto-locking zippers, this cat crate keeps your curious kitten securely inside. Includes an inner tether and a reflective strap on the side pocket for enhanced safety. The sturdy wooden base with machine-washable fleece cover provides excellent support and comfort. Suitable for cats up to 20 lbs or small dogs under 12 pounds, including breeds such as Chihuahuas and Yorkies DURABLE & BREATHABLE - Constructed from high-quality Oxford 600D fabric and robust frame, this pet kennel has mesh panels on five sides and three convenient zippered openings to ensure optimal airflow, keeping your pup cool and comfy throughout the journey MULTIFUNCTIONAL - Perfect for traveling by car, train, or vet visits. A side pocket for easy storage and a luggage strap that can also function as a seatbelt security pass-through for long road trips AIRLINE-COMPATIBLE SIZE – Measures 18"L x 11"W x 11"H (compressed) for under-seat use on American/Delta/United. Top expands to approx. 14"H for non-flight activities(car/train). *Always verify aircraft dimensions*. Fits pets ≤18" long (nose to tail base) Embark on adventures with your furry friends in style and comfort using our PAPZER Soft-Sided Airline-Approved Pet Carrier! This innovative carrier features a practical top expansion, providing extra room for your pet. Made from robust 600D Oxford fabric, it is suitable for both cats weighing up to 20 lbs or small dogs under 12 pounds. The ample mesh ventilation panels ensure a refreshing airflow while allowing your pet to take in the sights during your journey. Your pet's safety is our top priority. The PAPZER Travel Carry Bag comes equipped with a built-in inner leash and self-locking zippers on every opening, ensuring your little explorer stays secure and sound, free from any unexpected escapes. Plus, there’s a handy storage pocket for all your travel necessities. Setting it up is a breeze, and it conveniently folds flat for easy storage. Whether you're heading to the vet, spending a delightful day at the park, or embarking on a grand road trip, the PAPZER carrier bag transforms travel into a delightful adventure for both you and your furry friend!