Clear Bubble Expandable Backpack for Pets (Dogs and Cats) Details: Colour: Black and Grey Pet Weight: Cats up to 14lbs, Dogs up to 11lbs. Standard Backpack Size: 16*11.5*10.5 inches Expanded Backpack Size: 16*11.5*27 inches Only used a few times because my cat is too heavy. Has some light scratches on clear plastic window. - EXPANDABLE DESIGN: Texsens space capsule bubble cat carrier backpack features a temporary tent bed while expanding by unzip the back panel of backpack. - TRANSPARENT DESIGN: Cats Love to Keep a Close Eye on Their Surroundings. Transparent window performs awesome for cats to enjoy the scenery. - WELL VENTILATED& SAFE: 9 large ventilation holes on both sides and front, left and right ventilation nets ensure fresh air for fur-kids. - LARGE ROOM: A Roomy Feelling For Cat. - DURABLE MATERIAL: Built of High-Quality Pet Safe Materials, Waterproof , Easy Clean and Lightweight. - AIRLINE APPROVED! This Carrier is Especially Great For Long Trips!