Rails Oakland Sweatpant in Navy. - size XS (also in L,M,S) Rails Oakland Sweatpant in Navy. - size XS (also in L,M,S) Self: 72% cotton 28% modalRib: 60% cotton 40% modal. Elastic drawstring waist. Ride slant pockets. Elastic ribbed hem. French terry fabric. Imported. RAIL-WP17. 812-386-2455. 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.