Ordering these replacement tips was a bit confusing considering there are two options, compact size or standard size. I don't think I looked closely enough to notice that there are two different variations of this bait. The photos shown below are for standard child size, not compact. Because of this, I accidentally ordered a standard size to fill my Sonicare HX6330 baby brushes. In general, the standard size is actually comparable to the adult heads (see the comparison between the standard size child's head on the left and my head on the right - they're almost the same). I think the standard baby size is a bit big for my 7 year old's mouth, and I think the compact size would (literally) fit better. However, despite my error in sizing, these tips fit our Sonicare model very well and the quality is top notch.
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