Rhino Diamond Plate/KnobBack 2'x3'x1-1/8" 4 Yellow Anti-Fatigue Mats [ DTK2436DSYY ] Rhino Diamond Plate/KnobBack 2'x3'x1-1/8" 4 Yellow [ DTK2436DSYY ] - Visit http://rhino-mats.com/anti_fatigue_mats.html to view color options. Let us know your color choices at checkout.