IRO Gerlin Dress in Denim-Dark. - size 34/2 (also in 36/4) IRO Gerlin Dress in Denim-Dark. - size 34/2 (also in 36/4) Cotton blend. Unlined. Wrap styling with dual button closure. Optional waist belt. Structured shoulders and buttoned cuffs. Faded denim fabric. IRO-WD243. 21WWM33GERLIN. 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.