Rails Jackson Button Down in Blue. - size S (also in XS) Rails Jackson Button Down in Blue. - size S (also in XS) 60% rayon 40% cotton. Hand wash cold. Button front closures. Front breast pocket with button closure. Button cuffed sleeves. Shirttail hem. RAIL-WS478. 2258 103 086. Launched in 2006, Rails is a unique brand of fashion fusing California comfort activewear with European styling. High quality fabrics, narrow cuts, and unique lines; this collection is influenced by international travel and metropolitan lifestyle.