The proposed cup is made from industrial hemp - a variety of Cannabis specifically grown for industrial uses. This is a 100% biodegradable material which is converted by microorganisms into water and carbon dioxide within several months.
Growing hemp allows to produce large amounts of raw material (8-10 tons per hectare). Hemp's straw contains about 30% of fiber useful for cellulose production. Cups made from such cellulose are water-resistant and are not affected by fats.
It is also important to note that there are breeds of hemp cultivated in Russia which have no psychoactive contents. Thus, this makes it use safe in production of food containers.