I would say the Kissaluvs contour diaper is not one-size if used as an insert. If I try to fold it down to fit inside a diaper cover, it's much too bulky.
But I have found it to work great on it's own with a Snappi cloth diaper fastener hidden under clothes. It can hold a fair amount of pee without feeling wet from the outside.
I like to put this on the baby after a bath when I want the irritated skin to dry out well before we go back to the diaper covers.
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