10 lbs. Organic Coco Block Coir Brick Potting SoilOrganic coco coir growing medium 100% natural, sustainable, and eco friendly coconut fiber and coir pith particles, harvested from coconut outer shells are compressed into 10 lbs. coir blocks, the compressed coir bricks expand up to 2. 8 cu. ft. of coco potting soil by adding water, coir potting soil can be used as a soil amendment to improve your soils physical and chemical properties and at the same time increase permeability and moisture retention