Strong outer mesh enclosing a highly absorbent polypropylene shell and contents; contents won't spill and Dams won't sink, even when saturated with oil. The polypropylene content is left in its natural hydrophobic state - it doesn't absorb water (and floats on the surface) while absorbing oils and other hydrocarbons. Nylon rope and robust material ensure long-term durability and easy retrieval. Heavy-duty, easy-to-use fasteners enable booms to be butt-joined simply and effectively, creating a retention system large enough to cover a large area. White color allows easy visual control of absorption and saturation - saving you money and reducing waste. Filled with 100% post-industrial recycled polypropylene. 13 cm Ø x 3m Absorption capacity 113.6 L/Bag 4 booms/bag.