From the manufacturer: This fleece crew is all the soft you'd expect and more, with just the right amount of stretch. Made for everyday wear to keep you toasty, in a relaxed fit. Plus, we included our GRS-certified poly yarn in this blend, which diverts plastics from ocean and landfill. So you can look good and feel good in this piece. DETAILS SIZE & FIT CARE Crafted from 68% Tencel™ modal, 27% recycled polyester, 5% spandex Global Recycle Standard-certified yarn dramatically lowers environmental impact by diverting landfill- and ocean-bound plastic Uses eco-friendly dyes for reduced water consumption Made with care in Ningbo, China