cpr mask specification:

Material: Latex-free
Contents:
Foldable Cushion Mask With Oxygen Port,
One-way Valve,
Disposable Filter, Elastic Head Strap
Function : The Cpr Mask Is Designed To Provide Protection
For Rescuer When Manually Resuscitating
Patients. It Used By Adults, Children And Infants.
Storage:
Always Keep Mask In Storage Case When Not In Use.
Storage Temperature: -45°C ~ 71°C
Storage Relative Humidity: <85%
Specifications:
Dimensions: (122mm X 106mm X 46mm)
Expiratory Resistance: 2.0 Cmh2o (at 50 L/min)
Inspiratory Resistance: 3.5 Cmh2o ( At 50 L/min)
Operation Temperature: -45°C~ 60°C

Size: Adult, Child