Pendleton Long Sleeve Button Down Mason Shirt Red Plaid Medium JBHS Pendleton Long Sleeve Button Down Flannel Mason Shirt. Men's size medium. Pre owned Good condition. No stains or tears identified. Normal signs of gentle use. Shirt is a multi color plaid: red, black and brown plaid pattern shirt. Shirt is a classic style shirt with chest pocket. Shirt is made a soft cotton material. MC01517 #Casual #Activewear #Preppy