Blue wool herringbone balloon-leg trousers from STELLA MCCARTNEY featuring herringbone pattern, pressed crease, belt loops, concealed front fastening, two side slit pockets, rear welt pocket, balloon leg and logo engraved buttons. POSITIVELY CONSCIOUS: Stella McCartney scores 4 out 5 by independent ethical brand rating agency Good On You. It has set science-based targets to reduce its greenhouse gas emissions. It uses some eco-friendly materials including recycled polyester and organic cotton. It does not use fur, down, leather, or exotic animal skins..