The Swiss Glacier Decorative Aggregate from Kelkay makes for a beautiful looking addition to your garden. Stones are 16-32mm size and maintain their depth of colour and texture when wet A great way of decorating your alpines, rock gardens, paths, patios, driveways and are fish friendly when washed. It is recommended that a minimum depth of 35mm is used when calculating how much you need This item will be delivered with care and will need someone to supervise its arrival, due to its weight. Due to this product being made from natural materials, coverage distance may vary. We have calculated that this bulk bag will cover approx 8-12m² Multi-purpose Ornamental or practical Highly decorative Size 16-32mm Bulk Bag (approx 750kg)