One box of 36 practice face shields: The Practi-SHIELD® manikin face shield is a single-use training only product (disposed of after each use) that helps protect the student’s mouth from direct manikin face contact, creating a more hygienic training environment for everyone.  By using the CPR Practi-SHIELD® manikin face shield, you can provide a cost-effective and safe training experience for your students while adhering to CDC guidelines. The filter material used in the Practi-SHIELD® meets ASTM standard (ASTM 2101-14) for BFE (Bacterial Filtration Efficiency) of 99%. Plus, it’s latex-free, making it suitable for students with allergies.