Rails Cargo Pant in Grey. - size XS (also in L,M,S) Rails Cargo Pant in Grey. - size XS (also in L,M,S) 60% lyocell 40% linen. Zip fly with button closure. Side slant and cargo pockets. Back slip pockets. 18.5 at the knee narrows to 14 at the leg opening. Imported. RAIL-WP19. 706-273-090. 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.