What they are, how many you should have in your jacket and jeans and what to put in them other than your hands.

Pockets. They’re fairly self-explanatory, right? Wrong. While these little fabric compartments all fulfil the same general purpose – namely, carrying things you’d otherwise have to hold in your hands – they vary vastly in form, function and formality. We’d hate for you to come a cropper in conversation with your tailor, which is why the MR PORTER team has put together this handy primer on all things pockets.