Wolf Bike anti-pollution face masks. 
Color: Black

Material: Neoprene and mesh with N95 type filtration insert. 
Work for pollution filtration, migrating fire smoke and pollen

Velcro closure
One way exhale valve to keep mask inside cool and dry

Mask is one size fits all
11 inches from front seam to the furthest point of the velcro with mask folded flat. 
Mask does have a small amount of stretch to the neoprene.