These liners provide healthy water retention in your soil while still providing proper aeration and drainage. This product also promotes root growth. Coco liners have a neutral pH (6.0-6.7) and contain small amounts of beneficial phosphorus and potassium. Pre-formed for easy installation Coconut Coir is a natural fiber made from the husk of ripe coconuts Biodegradable and environmentally friendly Made in USA Your security is our number one concern