LittleICme said:
I am interested in trying the ABU preschool plastic diaper. I am a 36 waist and 41 hips.
Sounds pretty close to my sizing. I wear ABU in size large, and I calculate my waist measurements for 42 overnight, 41 daytime. Since I tape up my diaper and pull it up, I have to know right where all four tapes go on the various models. For preschools, the ends of the top tapes hit exactly where the factory folds are on the front. I'd call that just a few inches shy of "smallest practical fit", where the front tapes are getting close to each other. Since the preschools don't have front elastic, you're not deleting elastic from the fit as you draw in the tapes so it's much less of a deal. (they DO have rear elastic) My lower tapes are out about 1/2" each. So there's still plenty of room for me to "expand". I don't know quite where I'd place the maximum waist, maybe around 50".
As I am near the minimum size, and you are smaller than me, it'd be a good idea to get a few samples. In reality, both M and L will probably fit you, but will fit differently, and you need to try them to decide
how you want your diaper to fit. It's been my experience that diapers that I'm near the maximum size on tend to fit short and pull up in the middle, leaving no "drainage channel" in the crotch and are more prone to leaking overnight, so medium may simply be a bad risk for you. But the preschool have been making
excellent daytime diapers for me. Overnight I prefer something a little thicker, but most nights (like last night for example) they would probably have been fine too. They're good performers.