- Women's black polyester and viscose knit sweater - Round collar, long sleeves - Message typo stud decoration front - 1x1 ribbing on collar, sleeves and bust - Boxy fit - IKKS #actforbetter: material contains 63% recycled polyester Rock is my therapy. How about you? This fine black knit sweater seduces firstly with its boxy, comfy cut. Then for its message in maxi typography decorated with studs.