Rhino EZ Straw Grass Seed Germination Blanket measures 4' x 50'. The EZ Straw Grass Seed Germination Blanket is just like commercial straw blankets, but in a homeowner use. The 200 square foot blanket is perfect for slopes, banks, and ditches by holding grass seed in place and insuring that it does not wash away. Simply unroll and stake with included stakes, then seed, water and watch your grass grow. After grass is established, the blanket siimply biodegrades and enriches the soil.