Pool paddling swimming (Ecclesfield S35)

It’s used and needs a clean. It was fine the last time I used it but it’s been a year or so. It has an inflatable ring around the top to hold the sides up. It’s between 6&8 foot diameter. It has holes/ports on the side for a filter I think. I can’t guarantee that it’s not got any leaks and I can’t test it, but I think it’s unlikely.