Waterproof, fade-resistant, chemically resistant! RV-Safe Zone carefully selected the highest quality cross-linked polyolefin foam for its protective safety cushions. Our products are lightweight, flexible, shock-absorbing and chemically resistant with non-water absorbent properties that make them ideal for outdoor safety and camping products. This means that your RV-Safe Zone products will not be affected by extreme changes in temperature, moisture, or most household chemicals including oil, and gasoline. These cushions are dense yet flexible and will absorb extreme impacts to provide durable protection against accidental injury.