Cobbles are a great option when looking for ways of introducing a natural and decorative element to any outdoor area. Cobbles are ideal for patios, driveways, rock gardens, and water features. They can be used to add instant character to flowerbeds, decorative borders and pond edging. Cobbles can be used as gabion fillers. When calculating how many bags you will need, we recommend a minimum depth of 60mm. Please keep in mind that natural materials will vary in size and colour, with some being significantly different. Premium Aggregate Perfect for use on paths, patios, driveways rock gardens Low maintenance surface Fish Friendly – Wash prior to use.