I purchased these cushions as padding for Overstock's green iron rocking chair. The chair is very comfortable for me without cushions. However, when I stood up after sitting for a while in shorts, I had substantial criss-cross lines on the back of my legs. The cushion solves this problem. I noticed in the reviews of the chair that another customer had the same problem. Thank you, Great Offer Stock, for providing information for purchasing the proper fitting cushions. Water beads up on the surface, so these are waterproof. Next spring I will spray a waterproofing product on the cushion to keep it that way. The cushion and ties fit perfectly on my chair. Couldn't be happier!!!!!