Fully transparent front cover designprovides cats and dogs with a wide range of vision, Cats and dogs love to keep a watchful eye on their surroundings, The transparent window allows your pet to enjoy the outdoor scenery at all times ,and the pet won't feel anxious and uncomfortable. And they don't need to stay home alone anymore, have more fun when traveling. Excellent Ventilation9 large ventilation holes on both sides and front, left and right ventilation nets ensure fresh air for furry kids. The stretch anti-scratch net on the back provides maximum breathability for your pet to enjoy the time outside. outdoors with you. Expandability Design Cat Dog Carrier Bag. based on ordinary cat dog carrier backpacks, it will increase the expansion space. just unzip the sides of the back to create space. extra space, Develop Easily expand into a large tent bed for more room to play and rest. Product DimensionsFront section 12.6" L x 9.2" W x 16.5" H. Expandable back panel: 15.6" W x 16.5" H x 23.5" H. Suggested weight: 0-12 lbs for small to medium sized cats, 0- 10 lbs for dogs and puppies. Some airlines support this. Important Note: In order to let you have a better travel experience, please contact your airline before departure to review relevant information. 100% Quality AssuranceIf for any reason you are not not satisfied, we guarantee the return of the product without obligation. If you have any questions, do not hesitate to contact us. We will get back to you within 24 hours. We have filed a patent application for this product.