7.7-ounce, 89% recycled polyester/11% spandex interlock knit (solids) 7.7-ounce, 81% recycled polyester/8% polyester/11% spandex interlock knit (heathers) This product's carbon footprint has been measured and reduced through a combination of preferred materials and investing in carbon offset projects though the ClimeCo Certified Product ™ Program Snag-resistant Moisture-wicking UPF rating of 50+ Self-piped zipper placket Shoulder piecing detail Dyed-to-match, recycled, reverse coil zipper with silicone-tipped drawcord pull Self-turned cuffs Straight drop tail hem Side vents Tag-free label Due to the nature of 100% polyester performance fabrics, special care must be taken throughout the printing process.