Interfashioner® Cat Bubble Backpack Carrier, Back Expandable Clear Pet Bubble Backpack Carrier for Kitten Small Dog up to 5.5 kgs, Backpack for CatsTRANSPARENT CLEAR BUBBLE FRONT + EXPANDABLE BACK. This cat backpack carrier increase your pet's visual space via front transparent hard shell, gives more room and play time inside by expandable back panel. The real ever bigger expandable cat backpacks BREATHABLE SPACE CAPSULE CAT BUBBLE BACKPACK. Extra 9 vent holes around this carrier backpack and two side windows to perform great air circulation inside. Expanded back panel to be a giant tent bed for