The Cromar Vent3 Pro Roof Underlay 50 x 1m Green is a high-performance, three-layer roofing underlay, designed to provide superior protection for your roof. Manufactured by Cromar, this product is made with a non-woven polypropylene layer providing excellent water resistance, while the breathable membrane allows for superior ventilation. Additionally, it features a green protective surface that is not only aesthetically pleasing but also highly durable against harsh weather conditions. This product offers an efficient and effective solution for roof protection in both residential and commercial buildings.