Our fabric: Our cotton feels soft yet substantial. We only use 100% organic cotton grown without pesticides or fertilizers so it's lower impact than conventional alternatives.. .. Circularity: As part of our 73 Zero circular range, this item is certified by the Circular Textiles Foundation. This means we've not only designed it to be recycled, we've guaranteed there is a facility that can recycle it and you can send it back for free with our 73 Zero Take-Back Scheme.. ... Navy. 100% Organic Cotton. Certified recyclable by the Circular Textiles Foundation. Ribbed neckline. Easy care - wash at 30°