Product review (5 stars): I like the design; save silverware from dropping into the disposal
The stopper is functional as a "good" water stopper, but water will drain slowly (a sink-full is about 1/2 drained if left standing for a couple of hours while thawing frozen foods). I've had a few scary moments where a knife or fork slipped into the disposal, so this design reduces that risk and allows me to drain the water with a bit more confidence. it is easily removed to use the full disposal access.