A huge FYI to all parents...If the Baby Bjorn is not adjusted correctly you will indeed experience sore back muscles! —   My story started with a try at the wrap-type sling thing. It was pretty confusing and frustrating to say the lest. I then had the brillant idea to research and read through many  baby carrier reviews. Long story short, I ended up purchasing a New (not Used) Original Baby Bjorn sling. — After 30 minutes of carrying my child I did indeed experienced the back aches and sore shoulder muscles .I thought maybe… read full review »