Rails Maverick Camp Shirt in Brown. - size S (also in L, M, XL/1X) Rails Maverick Camp Shirt in Brown. - size S (also in L, M, XL/1X) 75% cotton 25% polyester. Machine wash. Front button closure. Lightweight terrycloth fabric. RAIL-MS228. RM-845C-995C-8137. 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.