Lekebobor Cat Carrier Backpack, Expandable Pet Carrier with Sun Shade & Full Front Opening, Breathable Mesh Backpack for Small Dogs & Medium Cats Up to 18 Lbs, Foldable for Hiking, Camping (Grey)

MAXIMUM AIR CIRCULATION & MULTIPLE ENTRANCES: Mesh windows on 4 sides for optimal airflow, 4 entrances (sides, front, and back) allow your pet to enjoy the outside scenery and easy entry into the carrier, and 1 expandable soft mat to keep your pet comfy during the journey EXPANDABLE & COLLAPSIBLE: This pet carrier backpack with an expandable back allows your pet to move around more comfortably and reduces the anxiety. And the carrier can collapse flat when not in use. Measures 13×9.8×16.5 inch, easily fits most small/medium-sized pets, weighing up to 18 lbs. Each airline sets their own specific requirements, so it is advised to check with your airline of choice