These masks offer triple-layered protection and are constructed with the highest quality machine-washable combed cotton. Washable/Reusable Protective particle-resistant outer layer Polyester fiber middle layer for particle filtration Ultra-soft & breathable combed-cotton inner layer Adjustable ear loops for fit and comfort Flexible nose clip for the perfect seal 3D chin design These masks are constructed from the highest quality machine-washable combed cotton, with triple-layered protection. Protective cotton outer layer Polyester fiber middle layer for particle filtration Ultra soft & breathable combed-cotton inner layer (FILTERS NOT INCLUDED) Filters available here