Thanks for all that info. I'm going to get one of the sized Swaddlebees pockets to try out. I will try the hemp/micro combo as the sewing sounds like too much effort. But I might change my mind at some point ;-)
Do you mind telling me what other narrow crotch nappy you have?
My DD is 17 months and about 11kg. But she's on the skinny side. And tall. So I might try the medium size and try it on her before washing it so that I can return it if it is too small.

Sasa