Doz by Sijo Cotton Pillowcase: Sijo, an award-winning bedding brand, brings its expertise to Doz by Sijo, offering high-quality, well-crafted, and affordable sleep products for better rest night after night.oeko-tex Cotton: Doz by Sijo Percale cotton sheets are Oeko-Tex 100 Class 1 certified, ensuring they are free from harmful chemicals, pesticides, and GMOs, providing a toxin-free sleep.single-ply Weave: Crafted from 100% genuine long-staple cotton yarn, our 300 thread count single-ply percale sheets are durable, breathable, and cool to the touch, offering lasting comfort.cooling: The breathable percale weave feels luxuriously soft, with a lightweight structure that enhances air circulation, making it ideal for those who sleep hot, ensuring a refreshing night s sleep.