.: Made with 100% ring-spun cotton, a lightweight fabric (4.5 oz/yd² (153 g/m²)), this t-shirt feels like a bliss to wear all year round. .: All shirts feature a pearlized, tear-away label for total wearing comfort. .: Made using ethically grown and harvested US cotton. Also a proud member of the US Cotton Trust Protocol ensuring ethical and sustainable means of production. This tee is certified by Oeko-Tex for safety and quality assurance. .: Fabric blends: Heather colors - 35% ring-spun cotton, 65% polyester; Sport Grey and Antique colors - 90% cotton, 10% polyester, Graphite Heather - 50% ring-spun cotton, 50% polyester