100% Polyester Ripstop - 100 gsm. Our lightest weight shirt ever at just 100 gsm. Super breathable lightweight fabric to keep you cool all day. Extra-large under arm mesh and upper back venting to maximise air flow. Crinkle resistant light weight fabric makes this shirt easy to pack in a small bag. Two chest pockets. One mobile phone chest zip pocket. Roll up tab sleeves. Contrast colour inside placket. Modern fit.