Made with GOTS-Certified 100% Organic Cotton available in 350, 410, or 550 Thread Count. This duvet cover is an excellent choice to protect your comforter and change up the style of your bedding. The fabric is exquisitely soft to the touch and breathable for the most luxurious sleep imaginable. We guarantee a safe, happy sleep free from harmful chemicals. For more on the material, visit our blog Why go for Organic Cotton?