Ambassador Coco Coir Brick 10L expands to approximately 10 litres of growing medium when hydrated, offering superior water retention compared to traditional soil. This compressed coir brick arrives lightweight and space-efficient, then transforms into a porous substrate that enhances soil aeration and root development. Simply place on a tray, add around 3 litres of water, and allow an hour for absorption as the brick naturally expands and loosens. Ideal for seed starting, potting mixes, and improving existing soil structure, coir provides plants with an optimal growing environment from the outset.