Upgrade any bed's comfort with the incredibly soft Mainstays 250 thread count cotton-rich sheet set. Offered in array of colors and prints that will complement most styles of interior décor. Combining the luxury, comfort and fineness of cotton with the easy care qualities of polyester, this product offers natural wrinkle resistance as well as it saves dryer time and energy use. Let luxury become an everyday experience with the refined comfort of these 250-thread-count, brushed, cotton polyester sheet set. Deep Pocket fitted sheet is generously sized to accommodate mattresses up to 16". Fully elasticized fitted sheet (stays in place all night long). Set includes 1 flat sheet, 1 fitted sheet and 2 pillowcases (twin has 1 pillowcase). This product is Oeko-Tex certified. Oeko-tex is an international association focused on textile safety and sustainable production. Oeko-Tex tests for known harmful substances and chemicals as well as for acidity and color fastness. All components of the product must comply with stringent Oeko-Tex standards to achieve certification.