Mr. Peanut'sMalibu Series Airline Approved Backpack Stroller Pet Carrier With Detachable Wheel Assembly

The bottom slides from side to side when it is on the trolley, making it hard to turn. How can i prevent the shifting? I can only use it as a backpack

How many pounds can the cat weigh

Does this carrier fit under Southwest Airlines seats?

If a cat pees in the carry case how can it be cleaned?