Big JoeFuf XXL Beanbag Chair Navy Plush

Is the cover waterproof? I have an dog that is sometimes spiteful and pees. Just want to make sure the underneath would be protected with this cover.

The zipper broke on the cover. How can i buy a replacement cover?

What is the measurements of the large

Could anyone that has one of these measure the circumference of tube for me so I can order material to make a slipcover while I await its delivery?