wow. this one is interesting. i might be of no help but i for sure will also benefit from the information i will get from this thread.

A fabric like Gore-tex sandwiched between the layers should form a good moisture barrier.  Ripstop nylon also would also make the transfer of water at least slower if not stop it all together.  Then there is the PUL (polyurethane laminate) fabric used in diapers.  I would think that would work as well.

cut up a flannel backed vynil tablecloth or buy yardage of it.

Dear Bee,  Let me know what you decided to use.  This is an interesting problem.  Seems like the vinyl might not be very washable/dryable.  But it could work...   Pam

Hi ladies!  Thank you all so much for your help!  I have not yet decided what I am going to use, but as soon as I do figure it out, I will definitely post here!  These are for Christmas presents, so I have a little time to work on them.  Thank you again for your help and suggestions!  They all sound great!

Take care,

Sweetcrafterbee

What if you ironed heat and bond vinyl between two thin layers of batting and then sandwiched the batting between the two cotton faces (you did say these were "reversible" aprons, right?) and quilted all the layers.

That way the vinyl would keep the moisture locked on one side while the other side stays dry and clean.

I don't really sew that much, but I have used the heat and bond vinyl for other projects and love how it protects.

Hope this helps.

Char55

I cook quite a bit and I am constantly wiping my hands on a towel.  I am wondering if you could design some type of snap off or button off towel for in front of the apron that could be removed and replaced as needed.

Try using a washable shower curtain.  My grama always recycled her old shower curtains this way!

DebaJean

I am making an apron as a Christmas gift for MIL also. Thanks for all the great tip everyone. Since this will be my first apron...I could use all the help. Thanks everybody!!

I wonder if you could Insul-Bright backing or fabric to back it to help keep some of the moisture out.  We have a project that uses it for lunch bags to keep the food protected, you would assume this protects the bag from getting wet from condensation on chillier food items. You might also try home decor fabric that's meant for use outdoors as well as in. They tend to be coated with a protective layer. Or perhaps old fashioned duck canvas or oilcloth is the answer you're looking for (a bit more substantial than your typical 100% lightweight cotton)?

Definitely let us know your final answer and share pictures!!