Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Madras Driving Cap - A fresh take on an old favorite, the Cotton Madras Driving Cap adds a touch of sophistication to any ensemble. Sewn brim. Adjustable leather strap with an "RL"-debossed single-prong buckle at the back. Fully lined with cotton twill. Shell: 100% cotton. Back strap: 100% leather. Imported.