I'd use a pee protector for the inner layer to make it waterproof! DIY foam filled lounger with complete sewing instructions. These are SO comfy, and so much cheaper to make yourself!
Im typically not a bean bag girl but,wow.Sumptuous Sheepskin Beanbag - Rugs, Sheepskins & Hides - Decorative Home - Indoor Living
The Chill Bag is a giant bean bag that measures eight feet long in diameter!
Oversized Enveloping Chairs The Chill Bag is a Big Bean Bag Chair that's Eight Feet in Diameter