When Cora came home after her broken femur was repaired, I bought from the clinic a sling: a wide longish band of tough fabric (plastic coated canvas, probably) with a handle (web, like a web leash or gym bag handle) at each end. Very inexpensive and perfect for rear-end support. As she got stronger, I was able to switch to the Webmaster, but as at least one other poster has said, it's not the greatest for rear-end support and wasn't sufficient for the first few days.