Kindly refer the product description before buying the product. Perfect Backpacks for Cats ; Dogs - Suggested Weight: 0-6.5kg/0.14lbs for small to medium cats, 0-5kg/0-11lbs for dogs, puppies. Space Capsule Appearance - The unique and popular space capsule design makes your pet feel safer, comfortable and lets it have a broader vision of the outside Breathable ; Durable - The solid PC material and soft mat on the bottom, holes on the side bring both better air circulation and anti-scratch effect. Transparent Design - Protection to your pet under dust condition.The material used for the carrier allows your pet to enjoy the sunshine and scenery and to interact with the outside world.The transparent design provides easy viewing,so that your pet can see the world and you can see your pet.