A leather encased plastic bottle, with a wooden cap cover and a handy clip-on for the belt.
All of it is real leather and hand-stitched.
Ideal to keep yourself hydrated during an event while keeping it IC responsible.
Though do mind to keep that responsibility when this is inevitably filled with something more alcohol-y than water!

This is just a prototype version, but i'll be making more. They will sell for about 45,- euro each. Reasonable?
Let me know what you think!