From my experience any IV with wavy mesh or a leaning tongue is just a sign of poor quality control.
I bought two '12 Fire Reds from two different FL, one pair had wavy mesh and a leaning tongue... Decided to wear that pair first. The left shoe's heel tab was about a half inch too tall and cut up the back of my leg after 6 hours of wearing them at work- and all I do is sit at a desk. So really it was only about 15 mind of walking total in them. Sent em to Nike they confirmed they were flawed and cut me a store credit.
Kind of scared to buy IV's online now because of that.