I bought this rack for my Kohler Whitehaven sink and they were definitely a worthwhile purchase!  I tried other racks/mats from local big box stores, but nothing was fitting my sink just right.  My sink is brand new and I love it, but was super paranoid about dropping soapy mugs and pots/pans on the bottom of my sink and risking chipping the sink.  I finally broke down and bought this rack and I'm so glad I did because now I have peace of mind when washing dishes.  If I drop something accidentally, the rack saves both the dish and my sink.  I also love that for bigger pots/pans, you can leave those items in your sink to dry in lieu of having to waste space on your kitchen counter for drying.  If you are considering this item, I would highly recommend it!  You won't look back!