At Le Col not much happens by accident and here we are talking about our waterproof pocket. Where it's placed. What size it is, what side its placed and why that is.
The first detail we looked at was where the zipped pocket should be placed. There are three rear pockets on a standard maillot or jacket and we looked at the optimum position to use. We didn't feel the middle pocket was the right place for it. Generally because it's the hardest pocket to reach with either hand. Easy reach is very important if you consider every second one of your hands is off the bars is significantly more dangerous as you are less able to respond to obstacles. The second reason the middle pocket was not right is because the most bulky items you carry should go in the middle pocket for aero dynamics.