About this item - **Expandable Design for Comfort**: Choose Standard (16.5"x9"x13.4", up to 14lbs) or Large (16.5"x10.2"x15.8", up to 22lbs). The expandable back compartment doubles interior space, letting your pet stretch, nap, or play during travel, hikes, or airport layovers. - **3-in-1 Adjustable Window**: Three settings: fully open for curious pets, breathable mesh for fresh air, or privacy shade for nervous travelers. Durable, scratch-resistant mesh keeps pets safely contained, with a built-in safety tether to prevent escapes. - **Premium Waterproof Construction**: Made from waterproof, tear-resistant nylon with reinforced anti-scratch mesh panels. Handles rain, dirt, and daily wear. Available in 5 stylish colors: Plum, Dark Grey, Light Grey, Polar Blue, and Lavender. - **Airline Approved with Smart Storage**: TSA-friendly, fits under most airline seats. Multiple front and side pockets store treats, collapsible bowls, waste bags, leashes, toys, and vet documents. Stay organized from home to destination. - **Maximum Safety Features**: 3-sided breathable mesh for optimal airflow, multiple secure entry points, interior safety lock clips, and a car seatbelt attachment strap. Includes a cozy plush mat for ultimate comfort. Perfect for hiking, car rides, and flights. - **Versatile Use**: Ideal for large cats, small dogs, hiking, travel, and everyday outings. Durable and stylish, this backpack ensures your pet travels safely and comfortably.