Pros: Light, works well with older children, well made.
Cons: Expensive, Difficult to use on front, doesn't fit all sizes.
I was looking for a carrier to replace my sling for use with my 2 1/2 year old (about 30 lbs.). She had grown to the point that carrying her on my back was the only comfortable way to carry her for longer periods of time. We already had a framed back carrier which I like for hiking but it was too cumbersome for me to like to use it for a walk around the mall plus my daughter likes to get up and down a lot (much more of a pain to do in the framed carrier). Using the sling in the back carrier position worked but put a lot of pressure on one shoulder and wasn't very comfortable. I had been looking at the Ergo for a number of months and finally decided to just bite the bullet and buy it. After the initial learning curve figuring out how to use it, we have both loved using it.
1) The ergonomic design of the The ERGO Baby Carrier supports the baby's spine and is a healthy position for their hips while they are carried.
2) Can be worn front or back.
3) The ideal time frame for use of this carrier when used on the front is between 3-5 months of age and used on the back from the age of 5-6 months to 5 years.
4) Machine wash and dry in delicate cycles.
5) The buckles are the best available, and where different materials are joined, reinforced stitching is used for durability and dependability.
The details: This is a soft carrier similar to a backpack with no frame. It can be used front or back and there is a special pad which can be purchased for use with an infant (I have only used it on the back with my 2 year old, though). It is very lightweight and easy to carry around even when the child is not in it. A special, matching bag is included for storing/carrying the Ergo in when not in use, if you choose. There is a special hood which can be brought up when the child is sleeping to support their head. The carrier is available in the colors Coral, Pacific Blue, and black. A number of accessories are available.
The summary: I would definitely recommend this for an older child that you want to carry on your back. I have tried using it as a front carrier once or twice but am unable to get it properly fastened by myself. I plan to stick with my sling for when I have an infant but wouldn't give the Ergo up for use with my toddler. Another thing of note is that my husband does not find this carrier at all comfortable. He is 6' tall, has a large build and long torso and cannot get it to sit in a way that is not painful on his frame.
A hint: The easiest way I have found to get my child properly in the Ergo on my back is to put the waist strap on and tightened. I then allow the shoulder straps to hang down and have my daughter climb on to my back as if for a piggy back ride. I then pull the shoulder straps back up and on to my shoulders, fasten the chest strap, and tighten the shoulder strap. I found this MUCH easier then the method given in the instructions.