Fits over your existing cloth or surgical mask, reducing air flow out of the top, bottom and sides. Improves particle filtration and reduces glasses fogging while remaining comfortable enough to wear all day. Made of 3D printed polymers, comfort fit mask frames are durable and reusable.
A pack includes four sizes of mask frames -
Small - Typically fits children to young teenagers or adults with petite facial dimensions. Female model is wearing a small sized frame. 3.3 in (84 mm) by 4.4 in (112 mm)
Medium - Typically fits older children, teenagers and adults with smaller facial frames 3.6 in (92 mm) by 4.8 in (122 mm)
Large - Typically fits larger teens and adults 3.8 in (97 mm) by 5.1 in (132 mm)
Extra Large - Typically fits adults with larger facial frames 3.9 in (100 mm) by 5.4 in (138 mm)
Size dimension key: X= from side to side at the widest point; Y= from top to bottom at the widest point - see illustration image)