Black and Navy: 65% cotton, 25% recycled polyester, 10% polyester; Oatmeal Heather, Heather Grey And Charcoal Heather: 60% Cotton, 30% recycled polyester, 10% polyester; Recycled Polyester: Polyester fiber in this blend is made from recycled content including plastic bottles. Recycled poly helps reduce water usage, energy consumption and CO2 emissions when producing this garment.; 8.5 oz., 290gsm; Ribbed cuff and hem with 5% spandex; Metal zipper; Tear away label; More Sustainable Cotton: Threadfast is a proud member of the Better Cotton Initiative (BCI). Cotton products from Threadfast support more sustainable cotton farming. Better Cotton is sourced via a system of mass balance.; Every Threadfast product contributes to the “Plant with Threadfast” program. Learn more at threadfastapparel.com/plant-with-threadfast