Ah, so he agreed to you shipping them when you felt they were ready and now is whining because he doesn't have them yet?
WELL, why didn't you say that then!
Perhaps if he agrees to your sending him updates on their progress at reasonable intervals, say once a week or so, then this thread can sink to the bottom until they are shipped. It's starting to get colder now and they may not be able to be shipped until the weather warms up. You should remind him of that also as you are not in charge of the weather.