HydroSack© and HydroSnake© contain pulp and super absorbent polymer (SAP), weigh 0.5 kg dry, absorb up to 20 litres of water in 2 to 3 minutes, will not leak even when punctured or when built into layers and retain their weight for up to three months. After flood waters subside the contents can be deposited in to the soil. Sack outer is Made from non-woven polypropylene, hydrophilic finish.

Flood water depth 50 mm per sack.