Interfashioner® Large Cat Backpack Carrier, Front & Back Extension Clear Pet Buble Backpack Carrier for Fat Cat Small Dog up to 9kgs, Backpack for Large CatsFRONT & BACK Dual Extension Cat Carrier Backpack for LARGE and Fat Cats up to 9kgs. This cat backpack carrier increase your pet's visual space via front transparent hard shell, Also the front 4" extension version FIXS VENTILATION & HOT issues vs. non expandable version. Are you still using the SMALL cat bubble backpack while your little kitten grows up. Your furry friend deserves to own a bigger one. That's the exact intention we launch this front