All you need to do is sew together either, one long strip of fabric on three sides or sew two pieces if fabric together on all four sides.
•turn the fabric right side in.
•Sew the sides (and bottom if useing 2 pieces of fabric) and the top. Make sure to leave an opening so you can turn it inside out.
•Before closing insert rice (i used white rice) through the opening. I filled it about half way.
• If you'd like to make a strap, you could put it in before closing.
• Sew the opening closed and your all done.
Warm it in the microwave for one minute and enjoy! Remember, don't add anything that might damage your microwave to your foot warmer!
Till next time, have fun sewing!