: Create a highly realistic, detailed product image of a cubic yard supersac made of durable canvas colored woven polypropylene fabric, filled with crushed bamboo biochar. The biochar should be visible through the open top of the supersac, showcasing 3mm screened crumbles of black, carbonized bamboo pieces and the texture of the crushed bamboo biochar should appear rough and granular. The bag has no backdrop showing faint shadows and muted light for a slightly dramatic effect. The scale of the image should clearly convey the substantial volume of the supersac, highlighting its large, bulky appearance.