This is a great product. Does what it's meant to do; allows you to securely and comfortably carry your baby with minimal physical effort.
That said, the instructions are useless. About 50 pictures in sequence with no words, and you're dealing with several identical looking straps and fasteners. Once you give up with the instructions, move to plan B. Put the thing together according to the pictures on the box. Give yourself half an hour.
Once you have it together, try using it. Which strap adjusts which part??? Play around with it for an hour. Then try testing it out with a large teddy bear.
If you can get that far, well done.
Now prepare to adjust one bit and have it distort all the other bits...
In summary this is about as user friendly as a towel made of razor blades.
If you have lots of patience and like figuring things out, and you have plenty of spare time, get it. If you are prone to frustration aggression snd have access to firearms, blunt objects, sharp objects, or anything else that can inflict trauma, you should probably avoid this product.
Seriously, I'd only recommend this thing if you can have somebody in store demonstrate it and then you've had a go yourself.
It's too large for use with newborns unless they're very big newborns, 12lb plus, and tall.