How to Make a Zippered Wet Bag Tutorial

If you know the basics of sewing, you can make a zippered wet bag in less than an hour. I've created an easy tutorial with step-by-step instructions.


Zippered wet bags are an essential cloth diaper accessory, perfect for carrying wet diapers when traveling. They can also be used for wet swimsuits and other gear! It is quick and easy to make a zippered wet bag, and they make great gifts!

Buying a large travel wet bag can set you back more than $20, while a yard of PUL and a yard of cotton, plus a few zippers will cost between $15 and $20, and with this you should be able to make at least 3 or 4 large wet bags.


Materials Needed to Make a Zippered Wet Bag:

  • 2 pieces of PUL (15x17")
  • 2 pieces of cotton fabric (15x17")- pre-washed (see note below)
  • 1 scrap of cotton fabric for strap (4x15")
  • 1 14" zipper - I like the fine-tooth zippers
  • Coordinating polyester thread
  • Clip (optional)
  • Sewing machine, preferably with a zipper foot




Be sure to pre-wash and dry the cotton on hot before you start, since your wetbag will be washed with your diapers, and you don't want it to shrink later.

If you're not sure where to buy PUL, Amazon.com has a good selection of affordable PUL fabrics, or check out our other cloth diaper fabric store suggestions. For this project, I bought a "sandwich" PUL from Wazoodle (the laminate is between 2 layers of polyester), and it was so easy to work with! I always find that single layer PUL catches on my feed dogs and is tough to sew with.


Instructions to Make a Zippered Wet Bag

On 15" side of fabric, center and pin zipper in place between PUL and cotton, laying right sides together. Position "top" of zipper facing into cotton material as illustrated below. With a zipper foot, sew together close to zipper.


making a lined zippered wet bag


Pull fabric free from zipper, right sides out. It should look like this.


tutorial on how to sew a wet bag


Next, top-stitch next to zipper as shown below.


top stitching the zipper on a lined wet bag


Repeat for second side of bag.


tutorial on how to sew a wet bag


It should look something like this.


how to make a wetbag


Now that you've sewn in the zipper, it's time to sew the bag together. To start, open material up, so that PUL material is right-side together, and cotton is right-side together on either side of the zipper, like this. Be sure to un-zip the zipper at least half-way before you start, or you will not be able to open up the bag when it is all turned! (Trust me on this, it's much easier to leave the zipper open than it is to attempt to open it or rip open your seams to fix it later!


sewing a zippered wet bag


Sew around 3 sides of PUL with a 7/8" seam allowance.

I like to finish the PUL seams with a French seam. To create a French seam, sew the 7/8" seam allowance first, then trim the top layer back half-way. Next, fold the edge of the bottom layer over top, and run a second seam, as shown below. I think this prevents wicking of moisture through the seams.


french seams to waterproof a wet bag


You will now want to make the strap for the bag. Fold strip of fabric lengthwise, right sides together, and sew with a 1/4" seam allowance, as shown below.

Turn fabric, then fold tube in half for extra strength and sew again.


sewing a handle for a lined wet bag


Fold strap in middle to form "loop". If you wish to add a clip to your strap, thread it on to loop now. A clip can be a great addition so you can hang your wet bag from your stroller. In this instance, I left the clip off because since I discovered the Mommy Hook, I have just looped my wet bags onto the big hook on my stroller instead. If you haven't heard of the Mommy Hook, I highly recommend it!


making a handle for a lined wet bag


Now, sew around 2 sides of the cotton bag with a 1/2" seam allowance.

Insert the loop inside the cotton, so that the raw ends are sticking out (see below). Sew loop into place on the third side (I like to back-stitch for extra reinforcement) - but don't sew this side all the way closed. Leave an opening at least 4" long so that you can turn your wetbag.


sewing tutorial on how to make a wet bag


Turn your wetbag through the opening. Now is when you will be glad you unzipped the zipper before you sewed the bag together!


turning the wet bag right side out


You can now close the opening, either with a blind stitch by hand, or with a top-stitch on the machine. I used my sewing machine.


tutorial on how to sew a zippered wet bag


Voila, you now know how to make a zippered wet bag!


For a simpler wet bag tutorial without a lining, check out our 20 Minute Wet Bag tutorial here!


As you can see, you can dress your wet bags up to suit your own personality. On this wet bag, I stitched together a few scraps of fabric, and added some piping details between the seams. I did this before I started making the wet bag, so I had 2 completed cotton pieces that were 15x17".


If you're feeling especially ambitious, you can even make a zippered wet bag in a matching, smaller size(finished dimensions roughly 6x9") for moist facecloths, so you can use reusable cloth wipes when you travel, too!



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If you think you'd rather buy a wetbag, check out some of the cute options available for sale on Amazon.com







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Disclosure:  The opinions expressed in this post are entirely my own, and your experience with the product may differ from mine. I only recommend products or services I use personally and believe will be good for my readers. This article contains some affiliate links.  I am disclosing this in accordance with the Federal Trade Commission’s 16 CFR, Part 255: “Guides Concerning the Use of Endorsements and Testimonials in Advertising.” For more information, see our Disclaimer and Copyright.




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