Bebe au Lait has developed a reusable, washable mask made from 3 layers of our breathable muslin fabric. They are both soft and very comfortable to wear. Mask features: 3 layers of soft and breathable muslin fabric A pocket to insert a filter 1 one-time use, non-washable, melt-blown filter included A bendable nose wire for adjustability and comfort Elastic ear loop design Available in 2 sizes: M-Adult- Approximate dimensions 8.5" x 5.5" (4.25" nose to edge) S-Child (2-12 years). One size fits most kids.- Approximate dimensions 7" x 5" (3.5" nose to edge). *It is not recommended for children younger than 2 years of age to wear face masks. Elastic can be tightened with a knot for a tighter fit Pre-washed. May shrink slightly after wash. Iron on reverse side to regain size and shape. Do not wash disposable filter. Our masks do not substitute an N95 or surgical mask.