Rails Olivia Lace Up Sweater in Gray. - size M (also in L) Rails Olivia Lace Up Sweater in Gray. - size M (also in L) 70% wool 30% cashmere. Dry clean only. Lace-up front neckline. Knit fabric. Rib knit trim. RAIL-WO43. 8048-578-087. 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.