VitalSleep is made in California, USA. All materials are of tested, safe FDA-approved, medical grade materials.
It's BPA and latex free. There are not metal components in VitalSleep.
The blue material is a thermal plastic that softens when heated in hot water for 60 seconds to give you custom teeth impressions after fitting.
Please avoid "Made in China" products that are not regulated by the FDA, that lack testing, and which may contain harmful materials.