rb Miramar Cpo Shirt (Avalon)rag & bone rb Miramar Cpo Shirt (Avalon) rag & bone 91%, 7%, 2% : Avalon rb Miramar Stretch Twill Trompe loeil rb Miramar, our revolutionary printing technique, can make any material look like denim. This button up layer is cut and sewn from a cotton blend fabric that has an excellent drape and is printed on the outside to look like a denim shirt. Featuring a functional placket and cuffs, the slightly relaxed style further achieves its comfortable fit