mfpen Button Down Shirt in Grey Generation Checkmfpen Button Down Shirt in Grey Generation Check. Oversized stretch viscose and cotton blend seersucker shirt. Garment washed with a check pattern throughout. 50% Viscose, 25% Cotton, 11% Wool, 10% Polyester Alex is 5'11 and wearing the Medium Made in Portugal Style ID: M325 001 mfpen mfpen is a contemporary clothing brand based in Copenhagen, reimagining Scandinavian minimalism and rethinking traditional designs with relaxed silhouettes and