This product is designed, manufactured, labeled, and packaged for sale to industrial and professional customers for workplace use; it is not intended for consumer sale or use Traditional cup-shaped, unvalved disposable respirator Colour-coded headbands offer easy protection level identification - colour coded yellow: FFP1 (APF = 4) Durable, collapse resistant inner shell Maximum usage level: Up to 4 x TLV Headbands are colour-coded for quick and easy identification, yellow for FFP1, blue for FFP2 and red for FFP3 Designed to work well with 3M Eyewear and Hearing Protection products Designed to work well with 3M Eyewear and Hearing Protection products