Levi's Double Denim Onesie - Why?

I have spent nearly five years of my life running this site and I have seen a lot of nutty things in my time, but this one really takes the biscuit. Levi's have produced this mind-boggling one piece outfit that consists of a pair of straight-leg jeans and and pale denim shirt. You read that right, this is a one piece outfit - the shirt is actually attached to the waistband of the jeans. I am intrigued to know what the folks at Levi's were thinking when they came up with this one. Is there some kind of shirt/jeans related problem out there that I am unaware of? (Source: Racked)