Turn common plastic coke bottles into a self watering microgreen grower. Fits normal 16.9 oz pop bottles. Also fits some 20oz and 1 liter bottles, 2 liter bottles fit but not recommended. Fill with water or nutrient solution, turn it upside down in a bowl, add clay pebbles (leca) and seeds, set in dark until it germinates and then give it some light. Made out of PLA, plant based. *Hand wash warm soapy water only, not dishwasher safe. *Do not leave exposed to sunlight when not in use.