Find your perfect fit!

When it comes to finding the best diaper fit for your little one, size really does matter! Most leaks are caused by sizing issues, so getting the fit right is key to keeping tiny bottoms comfortable, dry, and leak-free.  Every baby is different, and weight guides are only a starting point. Body shape, movement, and growth spurts can all affect sizing, so always use fit and comfort as your best guide. If you’re between sizes, try both to see which gives your baby the best fit and leak protection

Pura’s toxin-free, cloud soft™ diapers and diaper pants are designed with a stretchy waistband and flexible leg cuffs for a snug, comfortable fit. Plus, our new blowout blocker™ helps keep messes securely locked inside but does provide a snugger fit - so you may wish to go up a size in our new diapers. Follow our simple guide to help find the right fit for your baby – protecting delicate skin from playtime to sleep time.

Sizing Guide for Diapers

DIAPERS

Your super soft Diaper should fit snugly while still giving your little one the freedom to roll, kick, and crawl comfortably. 

It may be time to move up a size if: 

  • The waistband sits low on your baby’s tummy or slips down easily  
  • The tabs barely fasten at the front of the diaper
  • The diaper leaves deep red marks or irritation on the waist or thighs  
  • You notice more leaks, especially overnight or around the back  
  • Your baby seems uncomfortable or restricted in their diaper

Your baby may need a smaller size if:

  • The diaper sags around the legs or bottom  
  • The tabs overlap significantly when fastened  
  • Leaks happen because the fit feels too loose  

Get even more advice on our Pura parenting blog here.

Sizing Guide for Diaper Pants

DIAPER PANTS 

Diaper pants should fit just as snugly and comfortably as regular diapers, while allowing your little one the freedom to toddle, walk and play. 

It may be time to move up a size if: 

  • The pants leave deep red marks or irritation  
  • You’re noticing more leaks or blowouts  
  • The waistband sits low on the tummy  
  • The fit feels tight around the waist or legs  
  • Your baby seems uncomfortable or restricted  

You may need a smaller size if:

  • The pants sag between the legs  
  • There are gaps around the waist or legs  
  • Leaks happen because the fit feels loose  
  • The pants slide down during movement  

How to check the fit:

For both diapers and diaper pants: 

  • The waistband should sit just below your baby’s belly button  
  • The fit should feel snug but not tight  
  • You should be able to comfortably slide a finger inside the waistband  
  • Check around the legs to make sure the ruffles and inner leg cuffs are pulled out, not tucked in  
  • The leg cuffs should sit neatly in your baby’s leg creases  
  • The absorbent core should lie flat without bunching  
  • Your baby’s bottom should be fully covered  
  • The diaper or pants should stay securely in place while allowing your baby to move freely  

For taped diapers: 

  • The tabs should fasten evenly and securely at the front  

For diaper pants: 

  • The waistband should sit smoothly against the skin without rolling or twisting  

Not sure whether to choose diaper or pants? Read our handy blog guide.

The Golden Rule

You can find our size guides on our diaper and diaper pant product pages. Every baby is different, and weight guides are only a starting point. Body shape, movement, and growth spurts can all affect sizing, so always use fit and comfort as your best guide. 

If you’re between sizes, try both to see which gives your baby the best fit and leak protection. And if you need any further help or advice – don’t hesitate to drop us a line.