Expandable Cat Bubble Backpack Fit Small Medium Cats and Puppy Folded size:13.47" L*12.24" W*17.96" H. Expanded size:13.47" L*27" W*17.96" H. Suggested Weight: 0-15lbs for small to medium cats, 0-12lbs for dogs and puppies. Most Airline Approved under seat. Important: Please check your airline requirements before traveling. Elevon Cat Backpack Carrier Transparent Bubble Pet Backpack Carrier Transparent bubble cat backpack can make cats feel the change of external environment and avoid anxiety.Excellent ventilation of pet travel backpack, 9 large ventilation holes on both sides and front,left and right.Space Capsule Bubble cat backpack is superior in materials and excellent in workmanship. Made with high-quality pet safe materials, easy clean and lightweight. The side pockets can hold cat food. Be Close to Cat Multi-Function & Safe Materials Pet Travel Backpack Side-Access Openning It allows your fur-kid to explore the world and meet their curiosity. surrounding the backpack by side open.Play with the pet by putting hand into the backpack and pacify them when necessary.Easy in & out. Transparent Window Design Transparent space-capsule liked bubble hard shell performs great transparency and visibility for pet to enjoy the scenery.More breathable with 2 big mesh areas on each side and 9 holes for pet to enjoy fresh air while exploring the world. Breathable & Expanded Packback It features a roomy tent bed while expanding by unzip the back panel of backpack.Besides the standard soft mat, it also has two non-slip pad on the bottom.