Homemade Hand Warmers


  1. Open the ziplock baggie and put the SAP crystals inside.
  2. Add about a quarter cup of water. 
  3. Zip the baggie closed and let it sit for several minutes until the water is mostly absorbed. 
  4. Now add the calcium chloride to the baggie.
  5. Add about another quarter cup of water and zip the baggie closed securely. Try not to leave a lot of extra air in the baggie. 
  6. Knead the baggie until the calcium chloride is dissolved.
  7. You will feel a significant increase in temperature. 


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Homemade Hand Warmers

What You Need to Make Hand Warmers:

  • 100% Cotton Flannel (You can get it from Fabric.com)
  • Thread/Needle/Sewing Machine
  • Scissors and Measuring Tape
  • Uncooked Rice

How to Make Hand Warmers:

–New to sewing? Check out my 7 Sewing Must-H

–New to sewing? Check out my 7 Sewing Must-Haves List before you get started!

Measure and cut your flannel. You will need two 4-inch by 4-inch squares. As I stated above, make sure you are only using 100% cotton flannel and that they are no metallic threads running through the flannel.

Here are my 2 squares.

Here are my 2 squares.

Turn both squares so that the wrong side of the fa

Turn both squares so that the wrong side of the fabric faces outward and sew a simple straight stitch around the edges. You can do a zigzag if you really want to. These could easily be hand sewn if you do not have a sewing machine.

Make sure to leave about an inch wide opening on t

Make sure to leave about an inch wide opening on the 4th side of the square instead of sewing it all the way shut. Anything smaller than an inch will make it difficult for the next step. Turn the pouch right side out and pop out the corners so it looks just like a little bean bag.

Fill the bag up about 3/4 of the way full with unc

Fill the bag up about 3/4 of the way full with uncooked rice. It is about 1/8 cup of rice if you make the 4-inch square bags.

Fold the edges of the bag into the bag and sew it

Fold the edges of the bag into the bag and sew it closed. Make sure to reinforce the ends so you don’t have any rice spilling out into your pockets!

How To Make Your Hand Warmers Scented

One of the best things about these hand warmers is how amazing they smell! 

You can add different scents for different occasions.

For example, try pumpkin-scented hand warmers for Halloween or Peppermint scented ones for Christmas…

Easy Ways To Add Scent To Handwarmers

  • Mix a teaspoon of dried lavender into your rice filling
  • Use a few drops of scented oils to scent the rice before filling the hand warmer.

What Are Hand Warmers Filled With?

One of the most popular fillings for hand warmers is uncooked rice. It’s a natural filler that will withstand the test of time.

Another popular option for filling hand warmers is rolled oats. 

In this tutorial, we will be using rice because I find it works really well when adding scents… more on that below.

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This blog takes no responsibility for readers who try any of the experiments and demonstrations mentioned herein. Use appropriate safety gear (goggles, gloves, shoes, etc.) and educate yourself about laboratory safety rules.