IRO Harwel Shacket in Black. - size 36/4 (also in 34/2) IRO Harwel Shacket in Black. - size 36/4 (also in 34/2) Wool blend. Front button closure. Side seam pockets. Breast slip pocket. Buttoned cuffs. IRO-WO235. 21WWP100HARWEL. 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.