Since we are still in the dead of winter, relying on chunky wools and cashmere sweaters  are the smartest investments at the moment. From hefty cable knits to classic argyle and fair isle motifs , these more substantial cardigans are going to keep you warm, while looking extremely stylish. Some of our favorites include options from Khaite, Acne, and Altuzarra, and will be sure to see plenty of wear over the next few months—after all, April is still a while away.