I didn't get a good fit for ages with itti's but we tried them again after maybe 4-5months and now they are the only snap-ins that we use. I get awful wicking with WN's though. I am quite suprised at how much washing they need. All mine are preloved. I have one that is obviously older than the other and the inserts are tiny where as the newer ones (Which are still well used) have bigger inserts so still have a lot of shrinking to do, hence I think they are not at full absorbancy.
If you get any gape at all with ittis though I don't think they work though. I would say sell them though. You can always buy more if you find your LO does change shape.
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