British designer Stella McCartney stays true to her high-eco ethos within her capsule collection for Adidas, offering up design-led performance-wear with a reduced carbon footprint. These black Run three-quarter tights feature an elasticated waistband, a stretch fit and laser cut details. POSITIVELY CONSCIOUS: We’ve joined forces with ethical agency Good On You to give you the power to choose positively. This piece is from a brand that scores well on their key criteria..