A lightweight, rust-free aluminum ring is included to ensure that your Cacoon is always stretched out so you can relax comfortably. The polyester and cotton fabric has been UV tested, is water repellent, and treated for anti-mold and bacteria. With a carabineer, nylon rope hanging system, and storage bag, you can take the Cacoon with you on all your adventures! Composed of 65% polyester and 35% cotton, the fabric has been UV tested, is water repellent, and treated for anti-mold and bacteria. The