Aquascape Decorative River Pebbles Black are ideal for enhancing a wide variety of water features and gardens. These unique decorative stones are hand-polished, smooth, and pre-washed, making them the perfect choice for completing your project. Each stone measures approximately 3" to 5" in size, and the easy-to-carry 22-pound bags make them ready for transport. Each bag covers approximately 1.5 square feet of surface.