Oh diaper sizing question, this one very important lah because wrong size then leak everywhere and baby uncomfortable! Honestly I haven't personally tried Molfix before as it's not as commonly available in Singapore compared to Mamypoko, but from what I've heard from other mummies in my group, Molfix tends to run a little bigger in cutting compared to Mamypoko so if your baby is on the slimmer side Molfix might be a bit loose. I would suggest buying just a small pack of Molfix first to try before committing to a big bundle, can get from Shopee or Lazada, and compare the fit against your current Mamypoko because every baby's body shape is different one, what fits one baby may not fit another even at the same weight! 😊