Laerdal Mini Anne Plus 10-Pack

I am extremely disappointed in these manikins. I loved that I could easily carry around 10 manikins for classes. However, after using them LESS than 12 times total (and still under warranty so I am trying to get this handled by warranty) 3 of my manikins have now had seam separations (each in a different spot) that have deflated the manikins during compressions. It is very embarrassing to have basically brand new equipment malfunction during classes. None of them were over inflated, and now 3 out of 10 have had this happen.