FLUIDSHIELD Procedure Masks Feature SO SOFT Technology From a leader in face masks, Halyard's FLUIDSHIELD Procedure Masks are refreshingly colorful and comfy and feature an inner layer of SO SOFT bicomponent fabric technology. Facial protection is, perhaps, the most personal of choices in PPE. FLUIDSHIELD Procedure Masks represent a balance of both comfort and protection. When you're involved in any task with low fluid exposure, you'll breathe easier knowing these masks were the first to meet and exceed the new ASTM F2100-11 Level 1 standard. ASTM F2100-11: The New Standard for Fluid-Resistant Protection ASTM issues for performance of medical face masks, including a requirement for fluid resistance and particulate filtration. ASTM F2100-11 standards also call for mask packaging to be clearly labeled with the level of protection in one of three levels: 1, 2 or 3. This standard reinforces the importance of labeling to identify protection level, based on fluid resistance, filtration and breathability. This greatly simplifies the process of mask selection. ASTM F2100-11 is recognized by the FDA as the standard for medical face masks.