Ordinary pet bottles are so well made that it is a pity to throw them away.

So this method was invented to turn pet bottles into vases.

ISS (Ika Soumen System) started out as just an idea, but turned into a serious project.

Cover the pet bottle with the cylindrical paper made using ISS

and apply a little pressure from the top with cardboard. Once it locks in, it is done.

The form changes depending on the height of the bottle.