I have been making new cushion covers for all of the cushions in the boat. In the V birth and the Aft Cabin, the thinking was that the cushions will be covered with bedding 100% of the time. So, cost of material out ranked looks when purchasing fabric for the cushions.  What you see is from the discount bin at $6 /yard.  An upholstery fabric.  The back of the cushions is a water resistant nylon that is thin for breath ability. The sides are a different colour.....because we bought all the material there was and needed a bit more