Handmade masks in beautiful fabrics. The outer layer and 3rd layer is linen cotton or linen . The middle layer is of 100% polyester to act as a filter.
 
Elastic on sides can be adjusted by sliding the plastic toggle. Wash before use. Wash regularly. I followed the guidelines outlined on Australian health websites.
 
Tip:
 
Whether you have a reusable fabric mask, or a single-use surgical mask, do not wear it if it becomes damp. 
 
Masks could become contaminated or lose their effectiveness if they are damp, wet, damaged or dirty.  DHHS - Victoria's Department of Health and Human Services - recommends washing a reusable mask each day.And it should also be completely dry before re-use.DHHS recommends using the heat setting on your dryer, laying out flat to air dry or, if possible, place it in direct sunlight.
 
Approximate sizes 
Small - 20 cm across x 12 cm high
Medium - 22 cm across x 13 cm high 
Large - 24 cm across x 14.cm high
 
Mask on me in photo is not a linen mask.  Just there as a example photo.