It is a cardboard champagne coolbox made out off the original cardboard 6 bottles box Mailly champagne.

I made the box waterproof with rubber liquid and construction silicone.

It is a cool and cheep gadget to make with a champagne box.

 

Do you want to make it?

 

Take a look at: http://www.instructables.com/id/Cardboard-Champagne-Coolbox/