Enviroscape Straw-Coconut Erosion Control Bio-Degradable Blanket Roll - 8 x 113 Foot This roll is for short-term applications like establishing grass seed Designed to be used on gradual to steep slopes Bio-degradable and provides up to 100 square yards Made of 70 percent straw and 30 percent coconut fiber Covered by A.M. Leonard's 30 day satisfaction guarantee