How to sew a cozy mug

Learn how to sew a cozy mug for the perfect fall accessory. Use quilting cotton for an easy beginner sewing project that makes a great handmade gift!

There are many things I love about fall and colder weather, but one of my joys is drinking a hot beverage from a mug. I switch up my drinks with many types of drinks, but there is something so comfortable and special about holding a hot cup in my cold hands and feeling the wafting steam of my drink.

Sometimes I work or read while drinking from a hot mug and the heat dissipates too quickly. I created a simple cozy mug to place around any of my mugs to keep it warmer longer, and I'll show you how to make your own mug cozy! This is such a fun sewing project for beginners, and you can get the free sewing pattern at the end of the post!

I used a really pretty fall print that I love every time I see it. It's a muted pink with little fall leaves scattered throughout. It looks really good against the big wooden button.

I look forward to using it throughout the fall and will probably make another cozy cup for the holidays and winter.

What fabric should I use for a cozy mug?

The best fabric to use for a cozy mug is cotton fabric like quilting cotton. It is easy to sew, easy to wash and adapts equally well to hot and cold weather.

How to insulate a cozy cup?

Make sure to use some sort of batting between the layers of fabric to give extra insulation. There are many types of fleece with varying degrees of warmth. I went with some iron-on fleece that I had on hand to make it easier, but do some research to find what works best for you.

Do not place the mug in the microwave unless you have specifically used the correct materials. You could ruin your microwave and your mug if you're not careful!

sew a cozy cup

What is a PDF sewing pattern?

A PDF pattern is a sewing pattern designed on a computer and organized so that it can be printed on several sheets of letter or A4 size paper.

I love using PDF sewing patterns because if the pattern gets damaged or my kids or I have changed sizes, I can always print it again. It will never be destroyed since I have a digital version!

How to use a PDF sewing pattern?

Open the PDF on a computer and click Print. When printing, make sure the scaling is set to 100% or no scaling so that the design prints at the correct size.

Once the design is printed, it can be glued together to achieve its actual size. Then the pattern can be cut out for each size piece of the pattern or individual sizes can be traced so that the pattern can be used again and again. Learn how to use PDF sewing patterns.

How to sew a cozy mug

Do you like to sew? Try one of these sewing projects:

How to sew a cozy mug

How to sew a cozy mug


  • Free Cozy Mug sewing pattern – I get it at the end of the post
  • Coordinated quilted cotton scraps
  • 6 inches of 1/4 inch or 1/8 inch elastic
  • Big button
  • Mug (Isn’t this “Make it Sew” the cutest sewing mug?)
  • Scrap iron-on interfacing
  • Iron-on fleece scrap
  • Sewing tools
  • Sewing machine

Do you just want the pattern and tutorial in PDF format? Get the pattern and tutorial for just $4. You won't need to access the Internet every time you want to do so. Or get it Pattern Bundle with ALL PDF Tutorials!

Sew a cup

First, measure the circumference of your cup. I used a standard cup so you can use my measurement, 10 inches, if you have a similar standard cup.

measure around the cup

Measure the height of your cup. Mine was almost 4 inches.

measure the height of the cup

Add 1/4 inch seam allowance to your measurements. Cut out two rectangles of fabric, a rectangle of iron-on fleece and a rectangle of interfacing. I cut my rectangles 11 inches wide and 3 inches high. I would have liked to cut them slightly wider and slightly taller, like 11.5 inches wide and 3.5 inches tall.

cut out two rectangles of fabric, a rectangle of interfacing and a rectangle of iron-on fleece

Merge the interfacing on one rectangle of fabric and the iron-on fleece on the other rectangle of fabric.

fusion interfacing and iron-on fleece on fabric

Cut the elastic to 3 inches. Fold it in half and pin it to one of the short ends of a fabric rectangle. Brush it in place 1/8 inch from the edge.

pin the elastic to the short end of a rectangle

Place the two fabric rectangles right sides together, matching the corners and edges, and pin.

pin the rectangles right sides together

Sew around the edge with a 1/4 inch seam allowance and leave a 2 inch hole for turning. Pivot around corners and backstitch when you start and when you stop.

sew around the rectangle and leave a hole

Cut corners to reduce clutter.

cut corners

Turn it right side out and bring out the corners. Press the cup flat. Make sure the seam allowance at the hole is tucked inside when you press.

turn right outward and press flat

Topstitch 1/8 inch from the edge all the way around. When you sew over the hole it will close it.

stitch around the edges and close the hole

Glue the button to the edge of the short side without the elastic.

glue the big button on the side opposite the elastic

Sew the button by hand or sew the button with a sewing machine.

sew the button on the cozy cup

Secure your mug comfortably on a cup with the elastic loop attaching to the button passing under the handle. You have finished!

attach to a cup

Get the free sewing pattern here!

How to sew a cozy mug

If you make anything using this pattern, I'd love to see! Please share it on social media with the hashtag #heatherhandmade and identify me!

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