EXCLUSIVE AT NET-A-PORTER. Arch4s Chapman sweater is knitted with a preppy argyle pattern. Its made from pure cashmere and has a slightly loose fit with ribbed trims. brbrLower-Impact Materials. This product is made using at least 50% lower-impact materials or ingredients. Find out more about our NET SUSTAIN criteria a href=https://www.net-a-porter.com/en-gb/campaigns/net-sustainhere./a