This cashmere knit is a valuable investment thanks to its classic design, durability and luxurious feel. It offers both warmth in the winter and breathability in the summer, making it an all-year-round wardrobe essential. Cashmere softens with age and has a much greater resistance to frequent wear and washing than most materials. This simple crew neck from John Lewis can be worn alone, layered over a T-shirt for a casual weekend look, or over a collared shirt to smarten things up. Cashmere jumpers should be kept folded and not on a hanger as it protects their shape. When cleaning use cold water and never wring or twist, gently press with towels on a flat surface.