Thanks for the comments below. Unfortunately we never heard back from Sherpani. Perhaps it has something to do with the Wahoo being a remainder product.

Should be apparent, but the yellow clips are the ones that you should use for entry/exit of your bambino. You should be able to leave the other straps adjusted the same way and expand as the child grows. There are three yellow clips – two for over the shoulders, one for on the side.

We still can’t get the adjustments just right. Our little guy always seems to lean to the right. But he’s digging it -riding high and surveying the surroundings. That said – good design, comfy fit. Would love to try a Deuter pack, which we’ve seen around a few times. Seems light and well-designed as well.