The Invisible Socks by MP Denmark are knitted in super soft cotton fabric, this cut back shape is perfect for wearing with loafers or trainers. Pop socks Super soft cotton Available in two sizes\-Composition: 80% Cotton, 17% Polyamide, 3% Elastane. Care: 40c machine wash. Do not tumble dry. Do not iron. Do not bleach. Pop socks Super soft cotton Available in two sizes;. Colour: black