I have to disagree with something here. I have a box of Personna Lab Blue made in USA and it does not say "Comfort Coated" anywhere on the box.
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I have a box very similar, if not identical to that one. The blades are blue wrapped with the same printing. I am not convinced they are Labs, being the box says it was distributed by a beauty supply company. I haven't used one in forever but I don't remember them being all that great. I have also never used a "known" lab either.