Features: 1. It can resist water and saliva but allow air to ventilate. 2. When using an emergency artificial respiration, this mask can prevent disease as AIDS transmit and infect. 3. These disposable shields roll with a low resistance filter that fits over the manikin face. 4. It can be protection students from insanitary risks when theyre sharing a manikin in the CPR training class. 5. These shields can be used as a real CPR mask to make the CPR rescues in some emergency cases. 6. User-friendly design protects the rescuer and helps eliminate hesitation when performing CPR. Specifications: 100% brand new high quality Material:PVC,PE Face shield size:29x19cm Specification:36pcs/roll Usage:Training and Teaching Application: Emergency use for mouth to mouth breathing Color:Transparent Quantity: 36pcs/roll Package includes: 36pcs/roll CPR Face Shield Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement.