Removable indoor/outdoor pillow cover and mildew- and water-repellent pillow insert are included. Pillow cover made from InsideOut Performance Fabric features knife edge detailing and a hidden zip closure. InsideOut Performance Fabrics are made from durable polyester and polypropylene fibers, which are bleach-cleanable, fade-resistant, anti-mildew, and eco-friendly. Pillow insert cover and filling are crafted from 100% polyester. Pillow is ideal for both indoor and outdoor use. This pillow is crafted, tested, and rated for colorfastness and all-weather durability. Storing it out of the elements will help to extend its life.