IRO Hyko Sweater in Pink. - size XS (also in L, M, S) IRO Hyko Sweater in Pink. - size XS (also in L, M, S) 48% acrylic 34% virgin wool 18% polyamide. Made in Italy. Dry clean only. Tucked overlay detail at shoulders. Midweight knit fabric. IRO-WK65. 21WWM12HYKO. Launched in 2002 by French brothers Laurent and Arik Britton, IRO combines vintage-inspired prints with city style. Their collection features an ever-changing color palette and styles that range from wardrobe staples to on trend pieces.