Three styles: A Style, B Style, C StyleA Style: Capsule window The front and back can be extendedB Style: The front and back can be extendedC Style:Front extensibilitySee the figure below for dimensions.Make cats feel safer and facilitate long-distance transportation of cats.【Cool Features】This pet bag is super functional, cool and well made. Made of high quality pet safe material, easy to clean and light weight.【Near you】You can put this pet backpack in front of you. The small opening on the side is perfect for reaching out and petting her when she's nervous.【Enjoy Travel with Your Pet】: This backpack is lightweight and portable, you can use it to carry your puppy or cat for biking, hiking, camping, going out for a walk or meeting friends. It allows owners to have more adventures with their cute pets, and more importantly, it is also a great photo prop for sharing fun photos every day.SAFE DESIGN - Equipped with sturdy, reinforced construction, the backpack helps keep your friends inside so you can focus on your travels.Dear Sir and Dear Madam: Welcome to my little shop, I am honored to meet you here. No matter how many times you come to my store, I will serve every customer with all my heart. I very much hope that there are products in my small store that can help you and provide your pets with a better living environment and more comfortable living conditions. If you don't understand something about the product, please give me a chance to answer your questions.