COS Stores PortugalSpun from soft organic cotton blend-jersey, this ribbed tank top is the perfect basic to wear on its own or layered underneath overshirts and cardigans. Cut for a second-skin slim fit, it has a scoop neck and wide armholes for comfort.- Organic cotton is grown from non-genetically modified seeds without chemical fertilizers or pesticides70% Organic cotton, 25% Recycled cotton, 5% Elastane / Machine washBack length of size M is 27.40″ / Model wears a size M