my husband and i have been searching for a baby carrier to take our little one hiking for months now. we have stopped people on trails, borrowed friends and family's carriers to test them out, yet could not find one that could fit both of our frames (my husband is broad shouldered, 6'3" and i am smaller up top and only 5'4"). not only does this carrier adjust to our height difference, but the hip belt can also fit both of us (which you need with a baby and full pack)! plus the frame around the baby and harness are so nice, not just something you snap in, but it really keeps the baby in place! we went with the plus instead of the premium only because the difference we saw was the extra day pack, we do not need that additional piece. the premium also comes with a diaper pad for changing, but we have plenty of those as well! by far the best purchase we have made thus far as new parents!! great work on the osprey!