4 Signs to Size Up Cloth Diapers

How do you know when it’s time to start using a larger cloth diaper size? Typically the age of your baby is not a helpful indicator since each baby grows at their own pace. We have identified 4 signs that indicate it is time to size up, no matter what type of cloth diaper your baby is wearing.

  1. Leaks
  2. Saturated Diapers
  3. Too Tight
  4. Check the Weight Range

#1 Leaks

Leaks can be caused by an incorrect fit, but they can also be a sign that baby needs more cloth around their bum! As your child grows, so does their bladder. This means they will poop and pee in greater quantities. Baby will need the additional fabric of a larger diaper to keep up with these changes in their body. If you are encountering more pee leaks, this is an especially good sign they need more absorbing fabric.

#2 Saturated Diapers

When diapers are fully saturated you may encounter the leaks described above. If you typically change your baby every 1.5-2 hours but are suddenly finding their diapers are soaking wet within this time window, you likely need a larger diaper. Obviously the diaper is going to be wet in all situations, but if you’re finding the diaper heavy to the point of dripping after 1.5 hours you need more absorption. If the diaper seems to fit well, then you may simply need to add some overnight layers. However, if there is a larger diaper size available, it is worth trying out.

#3 Too Tight

Cloth diapers are very adjustable with all the snaps on the covers. You’ll know the diaper is getting too tight when it’s leaving red indentations or seems to be cutting off circulation. Some red marks with cloth diapers are normal, like the marks sock leave on our ankles after wearing them all day. However, if it’s digging in too much you’ll know you need to 1) go onto the next snap adjustment or 2) use a larger diaper.


Tinkle Belle Diaper Service only offers two sizes of all-in-ones, so it’s not too big mystery when it’s time to move from the small diapers to the large ones. You’ll know it’s time to graduate from small to large when you’re at the largest snaps and the inner wings cannot lay flat and pulled back. When their little booty starts sticking out the back, it’s time for a bigger diaper! Teddy is wearing a preemie cloth diaper, but you can see the strain and bunching in the top middle caused by the diaper being pulled too tight.

Teddy bear in cloth diaper with top lip of diaper bunching up.


When a prefold is too small you will notice that the corners no longer comfortable wrap all the way to the front. Teddy’s prefold, for exampl, is too small for him. The snappi should not be rubbing on the skin like that. He is ready for a larger diaper!

#4 Check the Weight Range

While baby’s age may not be helpful in determining a diaper size, the weight range is an essential factor! Check your baby’s weight to the according diaper size on this chart.

We hope these tips help you determine if your baby is ready for a larger diaper size! As a customer of Tinkle Belle Diaper Service you can  request to switch or test out the next size for you next delivery.

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