BioD-Mat™ blanket is woven from machine-spun bristle coir twines. This semi-permanent 100% biodegradable, strong and durable bristle coir woven blankets provide higher resistance upon installation while supporting growth and development of vegetation. BioD-Mat 70 blanket has field functional longevity of 4-6 years. These blankets allow designers and specifiers to go beyond the design limits of other types of organic erosion control blankets. These strong, durable and biodegradable blankets play an important role in soil bioengineering. The open weave in the BioD-Mat 70 blanket allow reseeding before and after installation. The 0.5 in x 0.5 in opening in the blanket allows planting plugs through the blanket without cutting the blanket. The 9.84 ft (3m) and 13.1 ft (4m) wide blankets have one seam in the mat.