Isabel Marant Etoilé's dark teal-blue Delwood sweater is perfect for mastering the new-season's statement layers. It's knitted with hints of wool and mohair for a soft, cosy feel, and shaped to a loose sleeveless silhouette with a high roll neck and open-knit detailing to border the open sides. Wear it to the office over a white shirt and slouchy trousers for an androgynous sensibility.