Life Gear LG17-60063-BRO Eco-Friendly Auto-Fill Sandbag, Brown, 5-Pack Protects your home or office from the threat of floods by sealing out water Compact crystal clay is lightweight and easy to store and expands to weigh 40 lbs when saturated in water for 3 to 5 minutes Utilizes non-pollutant, environmentally safe Super Absorbent Polymer (SAP) that can be recycled in a garden after use Stackable for added protection