A sustainable dye system that uses minerals transform these 100% organic cotton tees into styles that are not only colorful and one-of-a-kind, but also affordable. 4.5-ounce, 100% organic combed ring spun cotton, 30 singles 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 1x1 rib knit neck Shoulder to shoulder taping Side seams Tear-away label The mineral-dying process infuses each garment with unique character. Please allow for slight color variation in production and washing. Special consideration must also be taken when printing white ink on mineral-dyed cotton.