COS Stores PortugalThe COS ribbed tank will form the foundation of so many outfits. It’s crafted from organic cotton-blend jersey that’s light and super soft and designed with a scoop neck and wide shoulder straps. Tuck it into a pair of our signature trousers.- Regular fit- Organic cotton is grown from non-genetically modified seeds without chemical fertilisers or pesticides57% Organic Cotton, 38% Recycled Polyester, 5% Elastane / Machine washBack length of size S is 56.9cm / Model wears a size S