This is a great replacement for those of us with younger kids that inevitably wear out or chew the spout on their CamelBak Kids Bottle.
Though they are OEM parts, there is something about these spouts that don't fit quite like the one that came with our original bottle. The blue spout somehow ends up slipping into the lid, which causes suction loss and major leaks. However, it does seem that over time the material has "worn in" a bit, resulting in fewer occurrences.
All in all, this is still a great purchase. I'm glad they're available instead of having to replace the entire bottle. It's such a great way to make sure your kids stay hydrated!