Barker Brands Inc. Leopard Rolling Backpack Pet Carrier for Dogs & Cats! Large mesh panel in front and on the sides for extra ventilation. Size: Small/Medium Up to 20 pounds 14 In. x 10 In. x 19 In. (Width x Depth x Height) Measurements are approximate. High quality wheels can carry up to 20 lbs. Shoulder straps to double as a backpack when needed. Interior leash attachment for added security to ensure your pet won't jump out. Airline Approved! This just slides right under the seat where your feet go on the plane.