The type of foam used in the outdoor furniture cushions has been engineered to float, drain water, prevent mold and mildew, and withstand daily wear. We provide a premium solution for our cushion construction to protect it outdoors: normal PU foam with a waterproof liner cover to protect the foam. It acts like a water repellent; it does not absorb or transport water, so it easily drains any excess water. This kind of cushion exhibits open-cell foam, creating a virtually maintenance-free cushion in the sun, rain, and snow. The premium foam is protected by an anti-bacterial system with four different compressions to suit most comfort levels. Composed to be fine-tuned by adding polyester nonwoven padding for extra plushness.