- It doesn't allow for a back carry (unlike the Beco and Ergo)
- it dangles the baby from their crotch instead of spreading out their weight across their bottoms
- it doesn't split the weight on you between the back and shoulders
- it only goes up to22 lbs.
"And by the time she was 16 lbs. I found that carrying her in the Baby Bjorn was causing pain in my shoulders and upper back and even a tingling sensation in my neck. I now realize that a truly comfortable carrier, like The ERGO Baby Carrier I now use, has two padded shoulder straps and a padded waist/hip belt. This configuration distributes the baby's weight in a way that our bodies can handle it. When you think about it, it is not unlike what a hiker would look for in a good back pack."And this article notes,
Any carrier that positions your baby upright with most of the support located in the crotch could cause spondylolisthesis. Putting so much stress on the spine can hinder proper spinal development.If I were in the market for a structured carrier, I'd definitely go with either the Beco or the Ergo.
(I am not affiliated with either Beco or Ergo in any way. Opinions expressed are my own.)