The AquaSav™ Smart Coco Liner is engineered to be smarter than ordinary liners requiring about HALF the watering of other hanging basket liners. The secret is a special layer of recycled plastic sandwiched between two layers of coco fiber-which is biodegradable, pest and fungi resistant, as well as backyard compostable. The plastic goes about one-third of the way up the liner (halfway up in some smaller baskets because they dry out more quickly) creating a water tray built right into the liner. Plants stay water longer. You can't over-water! Excess water flows over the edge of the water tray, allowing just the right amount of water to remain in the liner and giving the soil and roots time to absorb all the moisture. This extends time between watering, and the basket never dries out. You'll have happy, healthy plants that last through the season, only watering about half as often. AquaSav™ is a trademark of the Pride Group, Inc.