Dog and Cat 2-Pet Carrier Backpack with Wheels - Almost Unused!

Pet Carrier Backpack with Wheels for 2 Dogs/Cats

Purchased about a year ago. I assembled it once and tried putting my cat inside, but one of them was too large and it was cramped, so I put it away without using it.
Since I won't be using it in the future, I'm listing it for sale. I've marked it as almost unused, but the wheels haven't even been taken out of their bag, and the plastic is still on the handle, so it's practically new.
It has been assembled, so I would appreciate it if you understand this before purchasing!
I think it would be very convenient for those who own two pets!
The actual product is shown in photos 2 through 6.
Instructions were not included, but it's easy to assemble.
Description
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Color: Black
Dimensions: Width 35cm
Depth 26cm
Height 61cm
Weight: 3.95 kg
Load Capacity: Up to 22kg

The main material is high-quality cationic linen, which is lightweight yet breathable, providing a comfortable space for your pet. The combination of durable fabric and sturdy stitching also makes it resistant to scratching and biting by pets.
The two-tiered design prevents a feeling of confinement, allowing each pet to have their own independent space.
Mesh material has been added to the front and sides to promote air circulation within the carrier, efficiently releasing heat and moisture, so there's no need to worry about stuffiness even during summer use. The mesh windows allow you to check on your pet's condition at any time, and also allow your pet to observe the outside environment, providing a sense of security by letting them see you.
The built-in leash prevents pets from jumping out due to stress and further enhances safety. Additionally, the use of blackout material protects pets from harmful UV rays and harsh sunlight, creating a safe and relaxing indoor space.
The [Smooth Universal Wheels] can be used for various purposes, including pulling, carrying on the shoulder, or by hand. For noise reduction and quiet operation, there are four gimbal wheels on the bottom that correspond to four buttons on the bottom of the bag. The wheels can be easily attached and detached with the press of a button.
Convenient for households with multiple cats or dogs.