Ralph Lauren Slim Fit Polo Shirt in Blue. Having been an icon of style since 1972, the Ralph Lauren polo shirt needs little introduction, however , by way of a super-soft 100% cotton makeover this iteration strays a little more into contemporary realms than its 70s predecessor. Cut to a slim fit, with a three button placket and ribbed collar and cuffs, this iconic silhouette comes finished with the obligatory embroidered pony logo to the chest.