Patio furniture seat cushions fade and can deteriorate after a couple of years' use. Finding new patio furniture seat cushions may seem challenging, but many retailers carry extra cushions in common sizes, making it possible to find replacement cushions for your existing patio furniture. It's important to find cushions that have ties so that they can be anchored to the furniture. Windy days will see these seat cushions flying about the yard, otherwise. It's also important to protect patio furniture seat cushions from rain and from sprinkler water that will lead to early demise.