Breathable hammocks made of Performance Ventaleen™ Technology are water resistant, elastic, UV resistant, cooling, & strong. Ventaleen™ Technology is a loosely, micro-woven polyester fabric, which allows more airflow between you and the hammock bed; giving it a cooling effect. Its woven pattern makes it behave like an elastic fabric; it has more give for added comfort and strength. Ventaleen™ Technology is specially coated with moisture-resistant and UV-resistant agents, allowing your waterproof hammock bed to last longer and dry faster than traditional cotton or polyester. Find the right size stand for your hammock or swing chair using our Hammock to Stand Size Chart. Check out our general FAQ section for answers to the questions you may have about our hammocks.