Protect your duvet insert while keeping comfy and safe. Our much-loved Cotton is made from a 100% cotton fabric, using a prewashed method to give a worn-in look and soft feel finish. This fabric becomes softer with every wash & use, that is breathable all year round - making it the perfect summer sheet, or ultimate comfort during the winter months. Durable and supremely soft, our chambray duvet cover and sham will elevate the look of your sleeping space. Plus, they are STANDARD 100 by OEKO-TEX Certified to be both safe and chemical-free.