A foam mattress's coolness, durability and compression set resistance are linked to a flexible polyurethane foam's porosity. Bayer MaterialScience LLC's new polyether polyol and formulation technology produce very high air flow polyurethane foam to achieve that "cool" effect without the extra post-step treatment used in current technology-without reticulation. In addition to high air flow above 5.0 scfpm, the technology offers control of foam recovery rates and surface characteristics, thus facilitating a wide range of end-use applications. The new technology from Bayer is particularly well-suited for the production of soft foam grades between 3 and 20 pounds IFD. Various commercially available MDIs or TDI can be employed in the process.