The Consumer Product Safety Commission has issued  a warning regarding the use of baby slings.  The full alert, (which you can read here) is directed at parents of babies younger than 4 months and doesn’t single out one specific brand of baby sling.  It does strongly urge parents to take extra precautions when using any over-the-shoulder sling with their newborn.

However you decide to wear and/or carry your baby, please educate yourself on this important issue.  

You should see the looks on my clients’ faces when I tell them
that their babies shouldn’t be having more than two hours of
awake time until they are 10 months old. It is like I have said
that a dragon just appeared at my door. I am always hearing,
“Well, my little Timmy can stay awake for four hours and he still
doesn’t look tired.”

To Read More:  http://www.thefamilygroove.com/mar10_BedtimeStories.htm