The Pergo Floormate Underlayment is a 3mm thick foam underlayment designed specifically for engineered hardwood flooring. With a moisture barrier included, this easy-to-install product provides a reliable and durable foundation for your flooring. Made from polystyrene foam, it offers excellent insulation and cushioning, ensuring a comfortable and functional space for your home or office. With a coverage area of 100 sq-ft and dimensions of 4'x25', this underlayment is a practical choice for any flooring project.