Coco Coir Fiber Bricks - Growing Medium & Potting Mix, Case of 24Coco Coir Fiber Bricks Premium Growing Medium Create the perfect growing environment for plants with these compressed coco coir fiber bricks. Made from natural coconut fiber, a sustainable byproduct of Sri Lanka's coconut industry, these bricks expand to provide excellent moisture retention and aeration for baskets, containers, seedlings, and hydroponics. Key Features 8: 1 Compression Ratio Each brick expands to 8 times its compressed size Makes 2+