Eye-catching Clear Window Design: Cats Love to Keep a Close Eye on Their Surroundings. A clear window makes it come true that cats are able to see everything and bring travel more fun. Excellent Ventilation: 9 large Ventilation Holes on both sides and front, left and right ventilation nets ensure fresh air for fur kids. The back expandable anti-scratching net provides maximum breathability that your pet will enjoy the outdoor time with you. Functional & Well made: The pet backpack is superior in materials and excellent in workmanship. Made with High-Quality Pet Safe Materials, Waterproof, Easy Clean, and Lightweight. The pocket on the other side is nice to fill in pet snacks. Be Close to You: You can carry the backpack in the front of your body. The little opening on one side is nice to reach in and pet her when she's nervous. Built-In security leash makes sure the safety. Item Dimensions: 11.4" L x 11" W x 16.5" H. Suggested Weight: 0-12lbs for small to medium cats, 0-10lbs for Dogs,puppies. Most Airline Approved under the seat. Important: Please check your airline requirements before traveling.