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height 45 cm x length 38 cm x width 29 cm;
for cats up to 8 kg, such as British Shorthairs and smaller Maine Coons;
backpack weighs only 1.5 kg;
porthole window with 180° view;
padded shoulder straps, hip belt and safety leash.
The Cosmocat XXL cat backpack is made for large cats up to 8 kg. Think of a British Shorthair, a Ragdoll or a smaller Maine Coon.
Your cat can sit upright or lie curled up in the roomy capsule and calmly watch the world through the porthole window. We travel with a cat ourselves and test our backpacks in real life.
🐈 For cats up to 8 kg
Suitable for large breeds such as British Shorthair, Ragdoll and smaller Maine Coons.
🪐 Porthole window
Space capsule design with a 180° view, so your cat can see everything around it.
🎒 Carrying comfort
Padded shoulder straps, a hip belt and an adjustable chest strap spread the weight.
🔒 Ventilation and safety
Mesh panels, air holes and a built-in safety leash that clips to the harness.
The backpack measures 45 x 38 x 29 cm (height x length x width) and carries cats up to 8 kg.
Your cat can sit, turn around and lie curled up inside. Very long cats cannot fully stretch out in it.
Measure your cat first with a flexible tape measure. A second person holding your cat makes it easier.
Add 10 cm to each measurement, then compare the result with the backpack dimensions.
| Measurement | Position | How to measure | Backpack minimum |
|---|---|---|---|
| Body length | Standing or lying | Tip of nose to base of tail | Result + 10 cm |
| Sitting height | Sitting | Tips of ears to base of front legs | Result + 10 cm |
| Chest girth | Standing | Just behind the front legs, over the back | Result + 10 cm |
Click an image to enlarge
👉 Read the full guide with tips and common mistakes: How to measure a cat for a cat backpack?
Tip: If your cat is between sizes or likes to stretch out, an expandable cat backpack is the most suitable option.
Note for air travel: at 45 cm high, this backpack does not fit under the seat in the cabin with many airlines.
Flying with your cat in the cabin? Take a look at our airline cabin pet carriers.
Yes. The wide padded shoulder straps, hip belt and adjustable chest strap spread the weight across your back.
The backpack itself weighs only 1.5 kg, so longer walks stay comfortable.
The built-in safety leash clips to your cat's harness, so your cat cannot jump out.
Sturdy zippers and reinforced seams make the backpack last. Through the porthole window your cat can see what is happening, which helps many cats travel more calmly.
| Feature | Cosmocat XXL |
|---|---|
| Dimensions (h x l x w) | 45 x 38 x 29 cm |
| Max. cat weight | 8 kg |
| Backpack weight | 1.5 kg |
| Suitable for | British Shorthair, Ragdoll, smaller Maine Coons |
| Material | Scratch-resistant, water-repellent |
| Ventilation | Mesh panels and multiple air holes |
| Window | Porthole with 180° view |
| Carrying system | Padded shoulder straps, hip belt, chest strap |
| Safety | Built-in safety leash |
| Colour | Grey |
| Under the seat in the cabin | Not with many airlines (too high) |
Yes, for smaller Maine Coons up to 8 kg. Large, long Maine Coons often only fit sitting or curled up. Always measure your cat first.
With many airlines it does not qualify as cabin baggage, because the backpack is 45 cm high. Always check your airline's rules.
Your cat can sit, turn around and lie curled up. If your cat likes to fully stretch out, an expandable cat backpack is the most suitable option.
The Cosmocat XXL weighs 1.5 kg without your cat.
You can return the backpack within 14 days. See our returns policy.
Order the Cosmocat XXL cat backpack now at Zoospot with free shipping in the Netherlands.
Also browse all our cat backpacks.
