[bilbylove]

parents and pumpkins sell their "prefolds refolds" or something like that
iish fly
bits for bots, 30 x 35 i think
mazalicious on wahmnaps have super soaker trifolds
the baby beehinds foldups are 30 x 30, a good size for nb /small prefolds
peapod bamboo inserts - not sure what they call them, but basically they are a trifold
pookey pockets
i know there are others too, just can't think of them right now.

JIC anyone is interested, it seems all these things, prefolds, trifolds, foldups, are all variations of basically a double layered little rectangle fabric - which you fold in three to insert inside a pocket, or lay inside a cover, like a AI2. The prefold has some extra layers in the middle third.

good idea to check what size they are, before you buy
it is confusing online i think for people who haven't bought them before, because most brands call them something else, trying to differentiate themselves - but when you see them IRL, its easier to work it out. i think photographing white objects online is pretty tricky too , which doesn't help. or maybe i'm just a person who needs to see things IRL to understand!!!

swm - i find a bamboo fleece insert the least bulkiest for the night pockets.