Rails Carter Top in Blue. - size S (also in XS) Rails Carter Top in Blue. - size S (also in XS) 100% lyocell. Front button closure. Breast slip pockets. Buttoned cuffs. Lightweight fabric. Imported. RAIL-WS771. 700-622-2573. 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.