GroMat Coco mats are made of all natural coconut fibers using organic latex as binder. Latex is required to bind the fibers together and is an essential ingredient. Our mats are treated to ensure there are no sticky surfaces due to the latex. The mat fibers are not too tight, and has the right amount of compactness to ensure root grows through the fibers. The mats thickness protects roots from sunlight and promotes root growth. This is the reason why our GroMat's are used widely in various types of hydroponics applications to protect and promote root growth.