item 3 50 Disposable Charcoal 4 Layer Carbon Face Mask Ear loop 4 Ply 98.8 % Filtration - 50 Disposable Charcoal 4 Layer Carbon Face Mask Ear loop 4 Ply 98.8 % Filtration. $70.00. Free shipping. No ratings or reviews yet. Be the first to write a review. Best Selling in Disposable Filter Masks.