Floating glass

The Floating glass

I Recently saw this strange looking glass:
https://www.thebeachglass.com
and I saw people wondering if the 3D model exists, if it's food-safe, if it floats and if it's available in different shapes and volumes.

Yes, the 3D model does exist, it floats thanks to nuts thats you can screw on the glass, and yes it's available in different shapes.
TWO sizes:
• 155 mL, suitable for Wine
• 245 mL, suitable for Soda or Beer.

Disclaimer:
I'm using Metric units, so it's a