Turn common wine, beer and glass soda bottles into a self watering microgreen grower. Fits normal longneck beer bottles and some glass soda bottles. Fits standard thin wine bottles. See picture. Do not use bottom heavy bottles, it may tip. Be careful when moving these if using wine bottles. 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. After the plants are a few inches tall, you can harvest the microgreens. If you want to try and grow them out to the baby green stage, you can refill the bottle by carefully lifting it out, refilling it. Put your thumb over the opening of the bottle, invert it and put it back in the adapter. Refer to my YouTube channel for details. Approx 6.25" diameter. If you want to use a pop bottle in a small bowl, get the soda pop adapter which is smaller, approx 4.5" diameter. Check the bowl or dish you want to use. Made out of PLA, plant based. *Hand wash only, not dishwasher safe. *Do not leave exposed to sunlight when not in use.