-Silicon diaphragm (twin pack).
-Design for Haenim 7S & 7A models breast pumps.
-Easy to wash.
-Suitable to use with UV Sterilizer (max 45 degree).
-Not recommend to use high temperature to wash, for example: steam sterilizer or boiling methods (ups to 100 degree).
-Well-packed.
-Recommend to change regularly for efficiency.