Black Lydia bikini bottoms from Mara Hoffman featuring a high waist and an elasticated waistband. Swimwear must be tried on over your own garments. POSITIVELY CONSCIOUS: Mara Hoffman scores 4 out 5 by independent ethical brand rating agency Good On You. It uses a high proportion of eco-friendly and recycled materials, reduces water by using a waterless printing technology and traces most of its supply chain with regular visits to suppliers.