It would have been nice to know 4 weeks ago...

We put a disposable diaper on Alex today because he's had a little rash and I went to put his church pants on and remembered that 4 weeks ago when he was also in a disposable, his pants fell right off in the middle of Jon's primary class.
So I was all set to go sew them up and was sitting at my machine devising the best way to take them in when I noticed a little clear button on the inside band near the front. What could this mean?! ADJUSTABLE WAIST!!!
Alex's church pants now fit and I didn't have to take them in. That would have been nice to know 4 weeks ago when he was walking around without pants on.