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Sew a wet bag: Sew a practical wet bag yourself in a flash!

07.05.2022 by Sabine Schmidt

Wetbag nähen: Praktischen Nassbeutel blitzschnell selber nähen!

Sew a wet bag: You'll want to have this cool bag with you everywhere from now on, want to bet? Here is the beginner-friendly sewing tutorial for the legendary stuff sack!

The most important things at a glance

  • You can use a wet bag for anything that needs to be transported while wet, dirty, or organized
  • That's why the wet bag is great as a swim bag, beach bag, or for traveling
  • You can sew wet bags and stuff sacks out of any sturdy fabric
  • Coated fabrics are particularly well-suited for wet bags
  • For stuff sacks, you can use regular cotton woven fabric
  • Sewing level: Beginner
  • Sewing time: 1 hour

The wonderful and creative Eve shows the beautiful things she sews and photographs on her website and on Instagram. But that's not all: she is also the inventor of the legendary stuff sack! With Eve's instructions for the stuff sack, we want to sew a practical wet bag today.

And specifically, out of a coated cotton fabric. A wet bag made of wipeable fabric is perfect for the beach, the swimming pool, the gym, kindergarten, for cloth diapers, and much more.

I am very pleased that I was able to get Eve to write a tutorial for SewSimple, so that you too can discover the magic of stuff sacks and wet bags for yourself from now on. ;)

Maybe you've just started sewing, have booked my online sewing course (click here for the SewSimple sewing license), and are now looking for a suitable project? Congratulations, you've found it!

Let's get started and sew a versatile wet bag. Let's go!

What is a stuff sack?

Stuff sacks provide order and space in any bag and have their roots in the outdoor sector. Because of their closure method, you can compress clothing and store it in your travel bag to save space. At the same time, the click buckle serves as a handle to carry your stuff sack comfortably.

So the closure is also a handle. How cool is that? ;)

Of course, these practical yet very simple stuff sacks can also be colorful if every gram doesn't count. In larger sizes, they even have their own place at my house for storing pillows or winter clothes. A small stuff sack made of coated cotton is a good storage solution for fruit. Their functionality is so extensive that there are no limits to your imagination.

What is a wet bag?

A wet bag is a bag in which wet or dirty clothing items can be stored hygienically. The special feature is that the inside of the wet bag is sewn with coated fabrics. This allows it to dry quickly and makes it easy to wipe down.

I like to sew such great wet bags as laundry bags for longer trips. This way, I can store everything perfectly. Of course, you can also use a wet bag perfectly as a diaper bag.

As you can see: The difference between a wet bag and a stuff sack lies actually only in the choice of fabric. If you choose a coated fabric, you can also easily pack wet "contents" inside.

Which fabric is suitable for sewing a stuff sack or wet bag?

It is best to sew the wet bag out of sturdy fabrics. Coated cotton, for example, is very easy to work with and practically indestructible. Furthermore, you can not only wipe it down quickly, but you can also wash it in the washing machine.

If you don't want to sew a wet bag but a completely normal stuff sack, simple cotton woven fabric is also sufficient.

Here are my fabric recommendations for you:

What is PUL fabric?

PUL fabrics are simultaneously thin, robust, and water-repellent. They usually consist of approx. 80% cotton and 20% of a thin, water-resistant, and breathable polyurethane coating.

PUL fabrics are ideal for wet bags, changing mats, diaper bags, seat covers, rain pants, diaper covers, and much more.

Due to the PUL coating, the fabric does not fray. This makes it an ideal material for sewing beginners.

What is oilcloth?

Oilcloth is a generic term for coated fabrics that are robust and washable. The properties of oilcloth depend on the composition of the layers. The base is usually a cotton, flax, or jute fabric that has been finished with a coating.

  • PUR/PUL coating: you can recognize this by the fact that the fabric is still soft and flexible and the surface has a matte shimmer; the fabric structure is still recognizable through the coating
  • PVC coating: you can recognize this by the fact that the fabric feels somewhat hard. The surface is shiny and smooth, the structure of the fabric is sealed by the coating
  • Teflon or acrylic coating: here the fabric is somewhat firmer, but remains easy to work with

You can order oilcloth here*.

How do I sew PUL fabrics?

PUL fabrics are very easy to work with on a sewing machine. A universal needle with a size of 70 to 80 is ideal. Since the fabric does not fray due to the coating, you can usually forgo finishing the seam allowances.

A medium stitch length of 2.5 mm for straight stitches is ideal. For topstitching, you should use a stitch length of 3–3.5 mm. This ensures an even, professional stitch pattern.

How is the best way to sew oilcloth?

Oilcloth is also easy to work with on a sewing machine. For PUL-based oilcloth, you can use a universal needle with a size of 70 to 80. Thicker oilcloth should be processed with a size 90 universal needle. When choosing the stitch, make sure not to select a stitch length that is too short: The fabric is perforated at the seams and can tear over time. A stitch length of 2.5 to 3 mm is ideal.

How do I sew coated cotton?

Coated cotton is absolutely uncomplicated to work with. It can be cut with both scissors and a rotary cutter and sewn with any stitch on the sewing machine. A universal needle or a Microtex needle with a size of 70 to 80 are best suited for coated cotton.

Can beginners also sew a wet bag?

The wet bag (and also the stuff sack, of course!) is a perfect beginner project because you only have to sew straight lines (and a bit of zigzag). Furthermore, sturdy fabrics are easy to work with. This is especially important for beginners.

It is best to watch the sewing video for the wet bag before you start sewing. This is a tip that, in my experience, helps to understand the work steps step-by-step. And once you have understood it, it is much easier to implement in practice, I promise. :)

What do I need to sew a wet bag?

First and foremost, fabric. You need an outer and an inner fabric. I recommend using non-stretchy fabrics like cotton, coated cotton, canvas, thin faux leather, etc. How you combine these is entirely up to you and the type of use for which you want them.

Furthermore, you need:

If your strap should be wider, simply adjust the width of the side-release buckle. And sew the drawstring wider as well. Our drawstring is wide enough for webbing 2 cm wide.

One more word on the bodkin: I use the threading tool from Clover* and am very satisfied with it. The larger of the two needles can also hold wide ribbons (the end of the ribbon is clamped as if with tweezers and then fixed with the small ring). By the way, also great for hoodies and drawstrings of all kinds.

Which webbing to use to sew a wet bag?

It is best to use webbing made of cotton if you can find one. It is just as durable as one made of plastic but much better for the environment. The less we burden our planet with plastic & Co, the better, right?

Unfortunately, I haven't been able to find 2 cm wide cotton webbing. But I'm not giving up on the search.

By the way: A good possibility is also to sew a sturdy strap yourself. Simply reinforce a roughly 8 cm wide fabric strip of poplin with Vlieseline H250, fold it inward twice, and topstitch it. :)

Are you interested in the topic of sustainable sewing? Behind the link, you will find many instructions for sustainable sewing ideas. Feel free to click through them. :)

How big is my finished wet bag?

Standard: approx. 22 x 40 x 8 cm

I use the size to pack my children's underwear, or also their swimsuits. This size is a real all-rounder. Of course, you can also feel free to experiment here.

Tip: The aspect ratio should always be approx. 2:3 in portrait format. And really large sacks should be reinforced with Decovil light. This makes packing easier. Furthermore, you should use thicker webbing and a matching side-release buckle.

How much fabric do I need to sew a wet bag?

For the standard stuff sack, you need the following fabric quantities:

  • Outer fabric: 70 x 60 cm
  • Inner fabric: 70 x 50 cm
  • Webbing approx. 60 x 2 cm + matching side-release buckle

All information includes seam allowances of 0.8 cm (sewing foot width) plus some “wiggle room”

My tip: If you have 70 cm cut off the bolt, you will get two stuff sacks out of it, since most bolts run at 140 - 150 cm.

Wet bag pattern free

Maybe you don't need a pattern for the wet bag at all because you cut your pattern pieces quickly with a ruler. I have to confess to you: I myself prefer to cut with a pattern. Therefore (and because I love the instructions for the wet bags so much), we have created a free PDF pattern for our wet bag.

If you would like to use the pattern commercially, you can download the license for it in my shop.

Download wet bag pattern

What does my sewing machine need to be able to do to sew a wet bag?

You need the straight stitch and the zigzag stitch. Use a universal needle. I prefer a size 70. If you use coated fabrics or faux leather, an even feed foot (walking foot) could be helpful. Maybe your machine is already equipped with it. One example is the IDT system from Pfaff.

Read my tips here on sewing thick fabrics and on sewing with the even feed foot.

Let's go!

YouTube video sew a wet bag

How many wet bags do you need?

Even if the wet bag is wipeable, it should go into the washing machine more often, depending on the intended use. If you sew the wet bag with coated fabrics inside and out, it dries quickly.

I recommend that you sew at least 2 wet bags so that you always have one in reserve while the other is hanging on the clothesline.

How often do you have to wash the wet bag?

If the wet bag is used as a swim bag, it should be washed at least after every second or third use. If it is used as a diaper bag, I recommend washing it briefly after every use.

If the wet bag is used for transporting fruit or vegetables, you should wipe it down with a damp cloth after each use.

Conclusion: Easier than you think!

Such a wet bag is conjured up ultra fast and is really fun. The most difficult part (I found) was once again the choice of fabric. I could have searched for combinations endlessly if I hadn't been so keen on sewing! Sewing a wet bag is really fun. :)

Eve's dry bag tutorial is truly fantastic for a quick sewing project in between tasks. The fact that it also creates something highly practical is almost secondary.
Well, not quite. I now use the dry bag in all sorts of sizes to keep things tidy around the house and in the car. Anything that shouldn't be flying around (like self-sewn XXL muslin scarves) disappears securely packed into the dry bag.

Happy simple sewing,

your Sabine

Sewing a wet bag

Frequently Asked Questions

Which fabric for wet bags?

Coated cotton is best suited for sewing a wet bag. It is wipeable but can also be cleaned in the washing machine at the same time. A clear advantage over oilcloth: coated cotton is much easier to sew and does not tear at the seams.

What is a wet bag?

A wet bag is a tightly closing bag in which you can store sensitive, damp, or dirty items or garments. It is perfect as a beach bag, pool bag, for cloth diapers, or even for fruits and vegetables.

Do I need a pattern to sew a wet bag?

You can easily sew wet bags from rectangular pieces of fabric cut to a 2:3 ratio. The depth of the bag is determined by the sewn-off corner that forms the base of the bag. The basic dimensions for my wet bag are 30 x 45 cm.

Can you also sew a wet bag with a zipper?

Instead of a roll-top with a side-release buckle, you can also sew the wet bag with a zipper. You can find a simple tutorial on sewing in a zipper at SewSimple.

Can I also sew a Velcro fastener onto the wet bag?

Instead of a side-release buckle or zipper, you can also very easily sew a Velcro strip lengthwise down the center of the wet bag. The soft, fuzzy part should be sewn onto the back of the upper half, and the scratchy hook part onto the bottom half of the front.

How can I sew a wet bag for daycare or kindergarten?

For a practical wet bag, it is best to choose wipeable fabrics for both the inside and outside. Coated cotton fabrics are very suitable. They are robust and can also be cleaned in the washing machine.

 

 

Links marked with * are affiliate links: If you make a purchase through them, we receive a small commission. The price remains the same for you.

Step-by-step instructions

Instruction 1 / 2

wetbag-naehen

Sew a wet bag with a side-release buckle

  1. Step

    How to cut the fabric for the wet bag

    You need the following fabric pieces to sew the wet bag:

    • 2 x outer fabric, mirrored: 30 x 45 cm
    • 2 x inner fabric, mirrored: 30 x 45 cm
    • 2 x outer fabric for the casing: 30 x 6 cm

    The seam allowance is already included in the measurements. If your webbing is wider than 2 cm, you should adjust the width of the casing piece. For 3 cm wide webbing, your piece should be 30 x 8 cm.

    How to cut the fabric for the wet bag
  2. Step

    How to sew the casing

    Start with the two casing pieces. Fold the short sides over twice by 1 cm and finish them with a straight stitch.

    How to sew the casing
  3. Step

    Attach the finished casing pieces to the outer fabric

    Fold the finished casing pieces lengthwise, wrong sides together, and place them centred, right sides together, with the open side facing up, on the short side of the outer fabric.

    Secure everything with wonder clips and edgestitch them in place with a straight stitch. Do this with both outer pieces.

    Attach the finished casing pieces to the outer fabric
  4. Step

    Sew the outer pieces together

    Now place the two outer pieces with the casings mirrored, right sides together, secure them with wonder clips and sew all the way around at presser-foot width. Leave the top side with the casings open.

    Tip: If you'd like to sew in a label, now is the time. Place it between the outer pieces.

    Sew the outer pieces together
  5. Step

    How to sew the bag base

    For beginner sewists I find the following method very helpful. At both corners where the bottom and side seams meet, measure and cut out a 4 x 4 cm square. Then pull the bag apart so that the side seam meets the bottom seam and the hole closes. Secure the sides with wonder clips and sew across at presser-foot width with a straight stitch.

    Tip: Experienced sewists can also simply sew across the corners here and mark the desired base depth with a set square.

    Your outer piece is done and you can set it aside for now. Now let's turn to the inner piece.

    How to sew the bag base
  6. Step

    Sew the inner pieces together

    Now place the two inner pieces mirrored, right sides together, secure them with wonder clips or pins and sew all the way around at presser-foot width. Leave the short top side open.

    Attention: Leave about 10 cm open on one long side as a turning gap. It will be closed later.

    Just as with the outer bag, now sew the bag base.

    At both corners where the bottom and side seams meet, measure and cut out a 4 x 4cm square.

    Then pull the bag apart so that the side seam meets the bottom seam and the hole closes. Secure the sides with wonder clips and sew across at presser-foot width with a straight stitch.

    Tip: Experienced sewists can also simply sew across the corners here and mark the desired base depth with a set square.

    Sew the inner pieces together
  7. Step

    Sew the inner and outer bags together

    You now have two bags in front of you. Turn the inner bag so the right side faces out. The outer bag stays inside out for now.

    Now put the inner bag inside the outer bag so they are right sides together. Make sure the side seams line up and secure both pieces with wonder clips.

    Then sew all the way around at presser-foot width.

    Turn everything right side out through the turning gap in the inner piece and push out the corners.

    Now secure the turning gap and edgestitch it closed. You can also sew a ladder stitch here and close the opening neatly by hand.

    Sew the inner and outer bags together
  8. Step

    Topstitch the dry bag

    Now push the lining into the dry bag and edgestitch once around the top edge.

    Topstitch the dry bag
  9. Step

    Thread the webbing and attach the side release buckle

    Now grab your webbing and thread it into the first casing.

    Since webbing is quite stiff, this works well by hand. But you can also use a threading tool. Then take one half of the side release buckle and thread it onto the webbing. Make sure the opening of the buckle faces outwards.

    Now thread the webbing on through the second casing and then through the second half of the buckle. Here too, the closing mechanism must face outwards. Make sure the webbing isn't twisted.

    Pull the webbing through the casings until it matches the exact circumference of the dry bag, mark the overlap and secure it.

    Now pull the webbing out far enough that you can sew it comfortably. I always do this with a straight stitch first so nothing can slip. Then I trim the excess webbing and secure it with a zigzag stitch so I can hide it more easily in the casing.

    Now all you have to do is rotate the webbing through the casings until the unsightly seam disappears.

    Done!

    Thread the webbing and attach the side release buckle

Instruction 2 / 2

wetbag-naehen

Sew a wet bag with a zipper

A wet bag with a zipper is almost even quicker to sew than one with a side-release buckle. All you need is a ready-made 30 cm zipper with a pull and the fabric measurements from the tutorial above.

  1. Step

    Sew a wet bag with a zipper

    A wet bag with a zipper is almost even quicker to sew than one with a buckle. All you need is a ready-made 30 cm zipper with a zipper pull and the fabric measurements from the instructions above.

    You can also use a longer zipper and shorten it, as I do in the video. You can find out how to bind and sew in a zipper in this detailed tutorial.

    • Cut your fabric pieces according to the instructions
    • You only need the pieces for the bag; you can skip the casing strips
    • For a loop, use a fabric piece 8 x 30 cm
    • Fold the long edges in twice and topstitch the sides with a straight stitch
    • Sew the loop 10 cm from the top edge to one side of an outer piece with a basting seam within the seam allowance
    • Shorten the zipper so that there is a 1 cm gap at the edges
    • Pin the zipper right sides together to the short edge of the outer fabric pattern piece
    • Pin the lining fabric with its right side to the wrong side of the zipper
    • Sew in the zipper with a zipper foot and a seam allowance of 0.7 cm
    • Fold the fabrics away from the zipper so that the edge of the zipper is exposed.
    • Place the second outer fabric piece right sides together, flush with the edge of the zipper
    • Pin the second lining piece with its right side to the wrong side of the zipper
    • Sew in the zipper on this side the same way as on the other
    • Fold all fabric pieces away from the zipper so that the zipper lies exposed in the middle
    • Edgestitch along the fabric edge of the zipper from tab to tab with a longer straight stitch, e.g. 3.5 mm
    • Open the zipper halfway
    • Pin lining to lining and outer fabric to outer fabric
    • Mark a turning gap of about 10 cm in the side seam of the lining
    • Sew the pinned edges with a straight stitch and 0.7 cm seam allowance
    • Cut 5 x 5 cm squares out of the corners
    • You can also reinforce the seams before and after the corner by stitching over them again with a straight stitch and backstitching
    • Pull the corners apart so that the bottom and side seams meet exactly
    • Sew across the corners with 0.8 cm seam allowance
    • Turn the wet bag right side out through the turning gap
    • Fold the seam allowances of the turning gap 1 cm to the inside
    • Edgestitch the turning gap closed with a straight stitch
    • Push the lining into the outer bag and shape all the corners well
    Sew a wet bag with a zipper

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About the author

Sabine

I come from Siegen-Wittgenstein, where I spent my childhood breaking in cows, jumping off haystacks and scraping a D- in needlework class.

Today, being creative feels like indescribable happiness to me – and it grows even more when I can share it with others. Since 2016 I have been celebrating my passion for sewing on this blog, and I love that sewing connects so many people.