The SV15bd is simply the button-down collar version of the SV15, so we won’t bore you with a complete repeat of that description. However we must add that the precise shape of the button-down collar model is really the ideal combination with the new SV15 fit, like a casual icing on a perfectly modern cake! With the SV15 as your new workhorse classic, the SV15bd is going to be your go-to for all those times you feel like being more casual than elegant, but elegant nonetheless.