The plant watering bulbs are made of high-quality PVC material with good permeability,not easily broken,can clearly see the amount of the water inside.Easy to use:Just pinch the globe,filled with water and inserted into the soil.Plastic body is more easier to draw liquid.Design:Transparent plastic body,convenient for you to observe water consumption of plants,and adjust the water volume in globe according to it.You can also filled it with nutrient solution or insect repellant,perfect for looking after your plants.It will be a perfect gift for people who love gardening,busy office workers,housewives and so on.You just need some beautiful paper tapes and gift boxes to wrap it and bring your friends or your families a big surprise.ENJOY YOUR TIME:Self-watering system eliminates the need to worry about leaving your plants unattended.For use with potted plants,houseplants,patio plants,hanging plants and outdoor gardens.colour:whitematerial:PVCsize:13x5cmPackage Contents:20 * Automatic watering device (20 white balls)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.