Hello,
We use bumgenius v4s during the day (pocket ones) and flips at night. However, I've found that in the last week I've had to do 3am changes as the flip has leaked and baby has wee all up his back, soaked through his vest, sleepsuit and sleeping bag.
We put a liner between him and the insert, but I can't help but feel this is enough. The pocket ones have that wicking layer, which means his bum isn't sat directly on all that wee. So I'm thinking about using the pocket ones at night with the toweling insert and a hemp booster. Would that be enough? Or am I missing something with the flips?!