We had installed a drain sans the pop up feature (just had the grill/grate) on our vessel sinks only to find that they do not drain. We found this pop-up on line and decided to give it a try. Vessel sink now drains very well and this is a nice touch for our elegant vessels.

We installed them ourselves...and...we're still married! Very easy for DIY people but you must know how to install as it does not come with instructions.