Futerra Netless Erosion Blanket - With no nets or threads, F4 Netless eliminates environmental, aesthetic and maintenance concerns. Fast germination means F4 Netless excels at vegetation establishment. It bonds to soil to prevent seed migration and sediment loss for up to a year—much more effective compared to other blankets. And F4 Netless weighs much less than any other blanket on the market and installs quickly with less man-hours per square yard!