The Custom Prism Ultimate Performance Grout Sanded is a high-quality grout bag made by Custom Building Products in the United States. This product is designed for ultimate performance with a stain-resistant formula and is sanded for easy application. With a manufacturer warranty of a lifetime system, you can trust that this 17 lb bag of grout will last for years to come. It is made of cement material and is guaranteed to provide a durable and professional finish for your tiling projects.