Unique "top-fill" design makes it easy to refill. Simply remove the FoamClean pump head from the locked position, insert the bag nozzle into the refill dock, turn to open the nozzle, and soap will flow from the refill bag to the sealed reservoir below the counter. "Top-off" feature eliminates product waste. The dispenser is very durable and comes with a lifetime free pump replacement guarantee. ADA push compliant.