EXCLUSIVE AT NET-A-PORTER. Arch4's understated knitwear will work hard in your wardrobe for seasons to come. This turtleneck sweater is made from soft black baby goat cashmere that's certified by GOTS, the highest ECOCERT Greenlife standard. The slightly longer length looks cool slouched at the waistbands of jeans or pants. This product was created using Considered Materials. Find out more about NET SUSTAIN here.