(AndreyB Also, what are advantages/disadvantages (aside of purely aesthetical ones) of "flapping" pocket that shirt has?
I can't post a larger photo yet because the magazine still has not returned the shirts. Soon ... I hope. The pocket flap is a flap that buttons. As such, the advantage is that nothing can fall out. On that which most older men still term "sport shirts", the double pocket with button flaps is pretty much of a "tradition" ... although I would defer to Manton as to whether or not it are a "rule".
In today's lexicon, the more common catchword is "casual" ... and the tradition has become more of a style option. Unless, of course, the shirt is a "Western" in which case the two pockets with button flaps ... or bezun ... is a Rule.