We have used this carrier for one year now, from age 6 months to 18 months and I cannot fault it. The carrier is very well made, still looks as new and our daughter is very happy being carried in it, the longest she has been in it so far was about 2 hours and she has never complained, whereas she now gets bored with being in the buggy. she has fallen asleep in it several times so I assume it is comfy to sit in. The integrated bags are useful and it is comfortable to carry for both my husband and myself, it is super quick to adjust the level of the shoulder starps to allow for different heights. My husband particulalry appreciates the netting which allows airflow, so you don't get a sweaty back. The only tiny thing I would change is to add some stirrups or other footrests, which would make it even more comfortable (can be purchased seperately I believe). I also want to add that for those who like using babycarriers like the moby or the ergocarrier as opposed to the baby bjoern or similar - the seat pad is fairly wide, so the child does not appear to hang in the carrier but sit well-supported with bent knees. The construction is so that you pull straps on several points which encloses the child front and back into the carrier, whoch gives as much upright support as you need depending on your child's age (only use it when your child can hold their head up easily though, this is not suitable for tiny babies)