Absorb, contain and divert problem flood water.Activates when wet, no sand needed.Absorbs eight gallons of water and swells to 64 lbs each.Grows to 10 ft long and 3.5" high in 10 minutes.Compact, lightweight and quick and easy to deploy.Inner absorbent turns to gel and creates a barrier.Dual lobe chamber prevents rolling out of position.Leave in place for ongoing protection.