Cotton and Polyester Blended True to size,The American big and tall full sized mens shirts include xxl,xxlt,3xl,3xlt,4xl,4xlt,5xl,5xlt,6xl,6xlt,Offering exclusive sizes for big and tall,king-sized men Mens big and tall casual dress shirts are made out of high quality fabric,which is soft,comfortable,breathable,durable,and still in good condition after repeated washing Our shirts suitable for all occasions like Business,Work,Office,Wedding,Party,Prom,Concert,Concert,Dating,Casual and so on Please choose your size according to our size chart (Not the Amazon Size Chart).