Solid colors: 100% organic cotton. Oxford Grey color: 90% organic cotton / 10% viscose. Wine Heather, Green Marble Heather & Cloudy Blue Heather colors: 80% organic cotton / 20% polyester. Combed cotton. Straight cut. Round neckline with rib binding and double topstitching straddling the seam. Matching tone undershirt band at neckline. Tubular cut. Double needle at sleeve hems and garment hem. No brand label at neckline, only a size chip to facilitate customization. Coconut Milk color care: this shade is obtained through a specific dyeing process that makes it more delicate than other colors. To preserve the shade, wash your garment at 30°C with gentle detergent and follow care instructions.