How to Measure for a Belly Wrap Extender: Get the Perfect Fit
By Belly Bandit® Maternity Support, Postpartum Belly Wraps, and | Published: 2026-09-01
Category: How-to Guides
Learn how to measure for a belly wrap extender to get a snug, comfortable fit. Step-by-step guide for postpartum swelling and between sizes.
Quick Answer
To measure for a belly wrap extender, wrap a soft tape measure around your belly at the level where your wrap sits, usually just below the belly button. Compare that number to the wrap's size chart, then choose an extender that adds up to 9 inches of adjustability, like the Belly Wrap Extender or Luxe Belly Wrap Extender.

Postpartum swelling and changing body measurements can make sizing your belly wrap tricky. If your wrap feels too tight or won't close, a belly wrap extender gives you up to 9 inches of extra room, so you can keep using your favorite wrap without buying a new one.
Measuring correctly is the key to getting a comfortable, effective fit. Here's a simple step-by-step process to help you measure for a belly wrap extender and choose the right one for your needs.
Why Measuring Matters
A belly wrap extender is designed to bridge the gap when your wrap is just shy of closing—whether due to postpartum swelling or because you're between sizes. If you measure wrong, you might end up with an extender that's too loose to provide support or too short to help at all.
The standard Belly Wrap Extender and the Luxe Belly Wrap Extender both add up to 9 inches of adjustability, but they attach to different wraps. Knowing your exact measurement ensures you pick the right extender and use it correctly.
Step-by-Step Measuring Instructions
Start by wrapping a soft measuring tape around your belly at the point where your belly wrap sits. For most wraps, this is just below the belly button, but follow the wrap's specific instructions if they differ. Keep the tape snug but not tight, and take the measurement in inches.
Write down the number and compare it to the size chart of your belly wrap. If your measurement falls between two sizes, or if your wrap feels too tight due to swelling, you'll need an extender. The extender adds up to 9 inches, so you can size down and still get a comfortable fit.
- Measure at the same time of day you plan to wear the wrap—swelling can vary throughout the day.
- Use a flexible tape measure, not a ruler or string.
Choosing the Right Extender
The Belly Wrap Extender attaches to the Original, Viscose from Bamboo, and B.F.F. Belly Wraps. The Luxe Belly Wrap Extender is designed for the Luxe Regular Belly Wrap. Check your wrap's compatibility before purchasing.
If you're between sizes, the standard extender lets you size down and use the extender until your wrap fits comfortably. This can save you money and keep you in a wrap that offers the right level of support.
How to Measure in 3 Steps
- Find Your Wrap's Position: Put on your belly wrap and note where the top edge sits. Typically, it's just below the belly button, but some wraps sit higher or lower. Mark the spot with your finger or a piece of tape. Checkpoint: The measurement should be taken at the exact level where the wrap's closure sits.
- Measure Your Belly: Wrap a soft tape measure around your belly at that marked spot. Keep it snug but not tight, and ensure it's parallel to the floor. Read the measurement in inches. Checkpoint: If you're between sizes, note that you'll need an extender to bridge the gap.
- Compare and Choose: Compare your measurement to the wrap's size chart. If you're between sizes or the wrap feels too tight, select the appropriate extender: the Belly Wrap Extender for Original, Viscose from Bamboo, or B.F.F. wraps, or the Luxe Belly Wrap Extender for Luxe wraps. Checkpoint: The extender adds up to 9 inches, so you can size down and still get a comfortable fit.
Products That Help
- Belly Wrap Extender: Postpartum swelling can make sizing your Belly Wrap challenging. Our standard Belly Wrap Extender gives you up to 9 inches of adjustability, so you don’t have to worry about purchasing a Wrap that’s too small or just shy of closing! If you’re between sizes, simply size down and use the standard Belly Wrap Extender until your wrap fits comfortably. Easily attaches to the Original, Viscose from Bamboo and B.F.F. Belly Wraps. This extender is a budget-friendly solution that adapts to your changing body, so you don't have to buy a new wrap during postpartum swelling.
- Luxe Belly Wrap Extender: Postpartum swelling can make sizing your Luxe Regular Belly Wrap challenging. Our Luxe Belly Wrap Extender gives you up to an additional 9 inches of adjustability, so you don’t have to worry about purchasing a Wrap that’s too small or just shy of closing! If you’re between sizes, simply size down and use the Luxe Belly Wrap Extender until your wrap fits comfortably. Easily attaches to Luxe Regular Belly Wrap. If you already own a Luxe wrap, this extender ensures you get the same custom fit without replacing your investment.
Measuring for a belly wrap extender is a quick and easy process that can save you from buying a new wrap during postpartum swelling. With up to 9 inches of adjustability, you can get a comfortable, supportive fit at every stage. Remember to measure at the right spot and choose the extender that matches your wrap.



