Our 6 oz. SUPIMA® cotton t-shirts are made of ELS (Extra Long Staple) American Grown SUPIMA® Cotton grown in California under strict, quality-controlled guidelines. This garment is produced in a windmill-powered, Fair Trade CertifiedTM facility. These t-shirts were grown, harvested, crafted, and traded in ways that improve lives and protect the environment. Additionally, no toxic dyes or formaldehyde were used in the production of our sustainable t-shirts.