Is there a way to know when to go up a size in diapers? My little guys in newborns and I know it says they go up to 10…

Once it's too tight it doesn't fit properly anymore you get a size higher

Dont go by weight, go by fit. Some babies carry their weight in their thighs and butt and may need a larger diaper

@kmharr3, I mean I'm not sure because it's pretty snug fit and doesn't seem too tight right now I guess I could try a size 1 on and see if it better. I just know if the diaper is loose he'll pee out of it.. :/

Put a size 1 on and see how it fits :)

If it leaks it's time to switch

@mommysbabies, ok thank you both:)

I learned the hard way, if they poop out the diaper it's too small lol

The size one I tried fits like half of his body but the newborns make little red marks on his legs:/

Could it be that he's moving on them or is it too tight?