Question: Why do cycling jerseys have three rear pockets? I’d rather have one or two bigger pockets. — Sue G.
Coach Fred Matheny Replies: A jersey with three pockets allows you to carry something heavy, like a full water bottle or several energy bars, in the middle pocket.
That way the weight is centered on your back where you barely notice it. It can’t slide to the side and tug your jersey annoyingly.
Three pockets make organization easier, too. I have a winter jacket with one big zippered pocket. I like the size, but it’s hard to find small items, like a gel packet or lip balm, when everything is jumbled in there together.