If you’re a parent, you’re probably familiar with something that’s been recently reintroduced into my life. It’s 2 am, and my 7-month-old son wakes up and is in need of a new diaper and bottle. So I get up and head into his room. I’m half asleep, I need to undo his PJs, change the diaper, and redo the PJs. And there is one type of PJ's that are head and shoulders above the rest: the reverse zip PJs. So good in fact, that I’m certain they were designed by parents that had the same exact experience I’ve shared.

Link: What Baby Clothes Can Teach You About Understanding Your Customers