Eco-Friendly Water Retention Natural Polymer is naturally designed water retention polymer. It works on the properties of Superabsorbent Polymer (SAP). It absorbs 400 times of water than its own weight and retains this water for a long time period then releases water whenever crops or plants require. Because of its natural design i.e. no chemicals are used, it is completely bio-degradable with totally pollution free. It has not any side effects on crop, soil, and human. The 100% bio-degradable property make this polymer residual free because it is completely mixed with soil as a biofertilizer so, we can say it can also work as a fertilizer after its main work of water retention.