Filtercup is basically a Scientific Brewing Tools :
It maintain a good flow of liquid into the cup.
Its perforations are design to get a controllable brewing cycle.
It is a controllable brewing device base on many of its feature such as spinning speed and number of perforations.
It allows G Force (Gravity) to get a desire brew base on the height of pouring.
Other Factors :
Our Scientific Extraction Technique – which we call "Spinning" :
Spinning or Twistering is a movement to ensure the coffee ground get swirling agitation just like washing machine (vortex) effect in order to maximize extraction without machine or electricity.
Our Scientific Extraction Technique – which we call "Thundering" :
Thundering is a movement to drain all the extraction and final push to draw essential coffee oil into the cup.
Earth Sciene :
Filtercup is an excellent choice to be go green as it is a ready to use seedling media. It can be reused as water and air filter when filled with activated carbon for many filtering purposes.