Cranberry S3+ ASTM Level 3 Earloop Masks for comfort and added protection with ASTM L3 protection. These masks boast ultimate protection: 99% BFE and PFE at 0.1 microns. The unique Quad-Fold, 3-ply design highly supports maximum breathability and is lighter without compromising filtration. The added CoolSilk® inner layer provides a level of comfort, coolness, and softness to the S3+ face mask; moreover, it has been made of dye-free and chemical-free material that is lint-free. Because of this construction, the S3+ face mask is very effective while at the same time comfortable to wear. Features and Benefits ASTM Level 3 protection for superior fluid resistance 99% Bacteria Filtration Efficiency (BFE) and Particle Filtration Efficiency (PFE) Unique loop wrap design and full-length nose guard ensure a secure fit Quad-Fold design offers 15% more breathing volume CoolSilk® inner layer for comfort: cool, soft, dye-free, and lint-free 3-ply construction for easier and smoother breathing with a light feel on the skin Soft to wear, does not cause irritation Colors Package Contains MFG Model# Blue 50/Box 280-S3160B White 50/Box 280-S3160W Black 50/Box 280-S3160K