• Type: Surgical • Style: Ear Loop • Construction: Pleated • Fluid Resistant: Yes • Sterile: No • Composition: Non-woven inner layer 4 -ply • Adjustable Nosepiece: Yes • Latex: No • Size: One Size Fits Most • Disposable: N/A • Brand: PFL® • ASTM Rating: Level 3 • Color: Blue • Package Qty: Box of 50 • Case Qty: 6 (sold as a box) The patented Positive Facial Lock® feature utilizes exclusive Twist-Seal® technology that allows the user to create a custom fit. The integrated Magic Arch® prevents the mask from coming in contact with the user's nose and mouth The hypoallergenic materials used in the PFL masks create a durable exterior and a soft, comfortable interior. • 97.8 % PFE @ 0.1 micron.