Sustainable Burgundy Wide Leg Trousers. Looking to be sustainable fashion ready this winter with true style thrown in? Check out these fab burgundy wide leg ladies trousers from This Is Unfolded. These 100% Sustainably sourced viscose twill trousers come in a rich deep burgundy colour. Their design includes wide waistband, elasticated at the back and side pockets. It’s zip and clasp fastening compliments it’s darts down the front for a more structured style. These are also available in black.