Micro hats, with their military and marine roots, can now be seen on everyone from football pundit Ian Wright to Tyler, the Creator. But do they keep you warm? • Don’t get Fashion Statement delivered to your inbox? Sign up here Micro hats, with their military and marine roots, can now be seen on everyone from football pundit Ian Wright to Tyler, the Creator. But do they keep you warm? Don’t get Fashion Statement delivered to your inbox? Sign up here The Guardian’s journalism is independent. We