Instructions printed right on bag Easy to Use - Non-Toxic Saves water and money with every flush perfect for home or office Each order contains 1 bag FlushLess heavy gauge water saving displacement bag. Simply fill bag with water, hang in toilet tank and start saving up to 2 1/2 quarts with every flush. Save water and save money. Easy to use with instructions printed directly on bag. Non-corrosive, heavy duty pinhole free PVC construction. Valve is self sealing and anti-evaporative.