• Masks should be made of at least two layers of tightly woven fabric (such as cotton or linen), and, if possible, a middle “filter” layer. A three layer mask can provide added protection. • For masks with a pocket, add a disposable coffee filter, paper towel, or reusable filter cloth. • For masks without a pocket, cut/unstitch one end and tuck a filter in between the two layers. • Your mask should fit your face, covering your nose, mouth and chin without gaping. • Your mask should be comfortable, easy to breathe through, and not limit your vision. • Mask and ties/ear loops should fit securely to avoid adjusting during use. • Choose fabric that can support a high temperature wash (e.g. cotton). Avoid stretchy material. • Choose fabric that maintains the mask shape after washing and drying.