Failsworth Millinery Waterproof Porelle Flat Cap. Failsworth Millinery Autumn / Winter Collection, these stylish caps are made from laminated wool with a weatherproof Porelle membrane and a polyester inner lining. Waterproof, windproof and breathable - superb protection whatever the weather! Available in six designs and in various sizes. Failsworth, a famous UK brand, have been making high quality headwear for over 100 years. Good condition. Sweat band along front does have stain.