Pyloric Sphincter of Stomach

This valve at the end of the pyloric canal lets food pass from the stomach to the duodenum. She is the great gate-keeper: will she allow your questionable breakfast to pass?

Adjustable straps and a flexible nosepiece help ensure a snug fit.
Outer layer: 100% polyester
Inner layer: 100% cotton
The mask can also be machine-washed and reused!

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