the bright bots are useless, they are just underpants with a crinkly bit in them (supposed to be a waterproof barrier but it isn't
) they really are for little dribbles only!
Minki yoyos (the pull ups) are better but the fleece ones are huge and bulky and are far too big for my 2 year old, ad the slinki ones were a bit shiny for my tase for a boy an still didn't fit properly anyway
Happy Heinys do a pull up that is pretty good as it is a pocket pull up so can be stufed as much as you like, it is a bit tricky to get the stuffing in though as they don't have any side poppers tey are literally a pull up.
The blueberry ones look good but again for a boy they seem a bit fluffy!!!!
If it's just for overnight then why not just use a stufed fuzzi bunz??