... is made of nylon, which is biodegradable &food grade, a tea tag langing on it so that it is ... : Soft pyramid tea bagModel NO.TB201Shape:PyramidMaterial:Food grade and Degradable NylonSizeBase side length 6cm, ... (tinned),gift package,bottle,etc.Tea leaves:Chinese green tea, Black tea, Oolong tea, Assam, Flower ... leaf/sprout tag. Although the tall pyramidal shape is not a 'close packing' polyhedron, the ...