5-PLY BlueEagle Disposable Face Mask | 3D-Structure | PM 2.5 | Soft Inner Layer | Breathable Ample Air Space | with Activated Charcoal | 25 Pcs (Black)Brand: Blue Eagle Color: Grey Features: 5 Layers Protection Each nonwoven layer is made by distinct technology to enhance users' comfort and dafety. 3D Structure Three dimention design provide ample breathing space, every side of your mask gets perfectly sealed and it stays stable when you are talking. Activated Charcoal AddedA whole layer of activated carbon nonwoven helps to blocks out unpleasant odors. 2. 5mm Elastic Ear Loop Wider ear loops