(Vacuum sealed for 10 yr life) Be Flood-Ready. Be Prepared. The world’s top selling Sandless Sandbag. FloodSax® are a self-absorbing / self-activating sandless sandbag that absorbs 50 TIMES its dry weight, can absorb and hold up to 5.8 gallons of liquid and offers superior protection against floods and leaks for up to 3 months. • The USPTO Patent Approved FloodSax® bags are designed with a super absorbent chamber structure for rigidity and stack stability. FloodSax are SALT WATER compliant, chambered design has a no leak external “bag” which unlike other materials (such as burlap, cottons or other sacks) will NOT leak out its internal contents over time.