These swirl plant helpers make watering delicate plants easy! They keep sensitive leaves dry and help avoid over-watering indoor plants in closed pots. They are designed to gently drip just the right amount of water (2, 5 or 6.5 oz) over 30 min to about an hour. Created by Peruvian clay artist Bernardino who enjoys making one-of-a-kind patterns using a technique similar to Japanese water marbling. Colors and patterns come assorted and vary.