Silicone, the miracle material for the kitchen, makes a practical sink mak. Soft, flexible silicone protects sinks from scratches and chips, and protects plates and glasses from breakage. Siicone won't stain or discolor and goes right in the dishwasher for clean up. The small silicone sink mat measures 14.25" x 10.75", the larger mat 17.5" x 12".