100% acrylicGrey Camo & Green Camo are 95/5acrylic/elastaneHeather Grey is 62/38 acrylic/polyesterAll other Heather colors are 50/50 acrylic/polyesterAdjustable cuff, shown as 3″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.