100% acrylic exterior, Grey 100% polyester jersey lining; Heather Charcoal is 50/50 polyester/acrylic exterior, Grey 100% polyester lining; Heather Grey is 62/38 acrylic/polyester exterior, Grey 100% polyester lining; 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.