100% acrylic; Black/Grey & Navy/Grey are 90/10 acrylic/polyester ; Grey/White is 72/28 acrylic/polyester ; ; This product meets the following Sustainable Style subcategory:Socially Conscious Manufacturing: This product was made in a facility that utilizes the Higg Index and has implemented Level 2 practices or above and was made in a facility that is WRAP certified.