From the manufacturer: Supersoft with half zip action, this long sleeve has a secure cell phone pocket at side-seam and a collar that's waiting to be popped. Our Flowknit is made from Global Recycle Standard poly yarn, which diverts and recycles plastics destined for landfill or the ocean, so you can feel and look good in what you wear. DETAILS CARE Made from 88% recycled polyester, 12% spandex Global Recycle Standard-certified yarn dramatically lowers environmental impact by diverting landfill- and ocean-bound plastic Recycled Claim Standard-approved dyeing, washing, and manufacturing processes with low-water and eco-friendly dyes Quick-drying, moisture-wicking, anti-microbial, 4-way stretch Made with care in Zhangjiagang, China Model is 6'2" and wearing a size medium