65% Cotton / 35% Polyester mix material and available in 4 sizes. The New Birdie shirt offers the buyer a choice 9 colour combinations in dual colours. With either Black or White shoulder and rib detail, the shirt also has the unique design of a split down the back in contrasting colour so that the material is not stretched whilst you are stood over a shot. It also looks fab!! The Williams brand name on the back neck and the logo on the left arm have both ben added for a more professional look. Finally an improved zip design means that they now come in stainless steel rather than nylon for longer life and more stylish look.