Navy wool blend Luisa slim-fit trousers from Filippa K featuring a slim fit, a button fastening, a waistband with belt loops, side pockets and rear pockets. POSITIVELY CONSCIOUS: Filippa K scores 3 out 5 by independent ethical brand rating agency Good On You. It uses eco-friendly and recycled materials, it traces most of its supply chain and has set up a project to improve garment workers’ wages.