Rails Pearson Knitted Polo in Cream. - size L (also in S, M, XL/1X) Rails Pearson Knitted Polo in Cream. - size L (also in S, M, XL/1X) 95% cotton 5% cashmere. Hand wash. Ribbed trim. Lightweight open crochet fabric. RAIL-MS294. RM-866C-984D-8819. 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.