* Food-grade silicone, no harm to skin, good fit and sealing

* Conforms to human engineering, good compatibility with other PPE

* More breathing space, lower breathing resistance

* Patented corrugated low "dead air" space

* Light weight, comfort and compatibility, without compromise.

* Simple design allows for easy cleaning, while replaceable parts extend product life and maximize value.

* Packaging: 1 Pc / Bag, 36 Bags / Box