These are very lightweight fabrics, one of the lightest weight face masks that I've made. It reverses to white.
One hundred percent cotton has been pre-washed in Woolite, and dryer dried for shrinkage.
I specifically searched for many hours, over many days, at many places, for lightweight cottons.
I've encountered several seniors recently, when shopping for groceries who weren't wearing a mask because of not being able to breathe through one. That inspired me to start sewing facemasks.
The cost of supplies continues to rise, as well as the postal service rates. I have endeavored to make these masks low cost, not making a profit, because of dire need. Also, I have set shipping costs lower, not allowing for handling, or packaging costs. Pay the same postage, whether purchasing one mask, or a set of masks.
These are stressful times, many have lost loved ones, lost their jobs, their health, and other things we may not know about. You may be one of them. My heart goes out to all. Please stay safe, and call your loved ones DAILY!