Excelsior heavy duty erosion control blankets provide temporary protection for seed and soil from the erosive forces of wind and rain. Excellent for heavy slopes and swales. Wood "excelsior" fibers provide water absorption properties and a tough, biodegradable matrix for vegetation establishment of newly seeded slopes and channels. The nettings and stitching are typically made from synthetic materials; however, excelsior blankets are also available with biodegradable nettings and stitching for environmentally sensitive applications.