The COS menswear team know a thing or two about designing quality winter knits. Crafted from heavyweight traceable wool with a touch of supremely soft cashmere, this rib-knitted polo shirt is shaped for a relaxed fit and designed with a flat collar, buttoned half-placket and ribbed trims. Wear it with jeans and a pair of Derby shoes. Relaxed fit Long sleeves This product is Responsible Wool Standard (RWS) certified by Control Union 893290 and contains wool fiber from farms certified to animal welfare and land-management requirements The Good Cashmere Standard® is owned by Aid by Trade Foundation(Ab TF) and sets out requirements on welfare of cashmere goats, use of natural resources and support of farmers 95% RWS Wool, 5% GCS Cashmere / Dry clean Back length of size M is 25.19" / Model wears a size M.