https://www.selectsafetysales.com/p-292-cpr-faceshield-rescue-breather-50box-j5058.aspx
CPR Faceshield With One-Way Valve, 50 Per Box - J5058
This CPR Faceshield features a true one-way valve and mouth-to-mouth barrier for administering CPR and artificial resuscitation without the risk of ingesting...
one way valvecprfaceshieldperbox