These cotton flannel sheets are ultra-warm and double-brushed for softness to keep you comfortable every night! This collection features an assorted heathered colors that will compliment your bedroom & guest room decor effortlessly! Cozy up in these warm flannel sheets and watch the snowfall while you drift off to sleep. Certified Standard 100 By Oeko-Tex: Tested For Harmful Substances And Produced In An Environmentally Friendly And Socially Responsible Manner.