The QuietWalk LV Underlayment is a high-quality flooring underlayment designed for vinyl and laminate floors. It features a thickness of 1.5mm, a length of 33ft, and a width of 36 inches, providing ample coverage for a 100 sq ft area. The underlayment is moisture-resistant and comes with an attached vapor barrier, ensuring optimal sound reduction and preventing water damage. Its black color makes it versatile and suitable for various flooring applications, making it a practical and reliable choice for home improvement projects.