I have a red double sink in my kitchen, which has a red vinyl floor and decorative accents, so I usually have to look for a little while to find a red sink mat to match. Over the years, Rubbermaid has offered a couple of styles.
The current red mat is called a Microban sink mat, which has antimicrobial properties that fight the growth of stain and odor-causing bacteria. The mat is 13.5 by 11.25 inches. It has a large circular hole over the drain, with a flap. It also has lots of drainage holes throughout the mat. With regular rinsing and cleansing, I have never seen any mildew or stains. The sink mat has proven to be very durable. I often wash it in the dishwasher as needed.
Since I have a red porcelain sink, it also serves as protection from pots and pans, and other abrasives. I have had my sink for many years, and it is time to get it replaced, but it has held up very well, since I protected it to the best of my ability.
I only use a sink mat in one side of the double sink, as I use the second sink for my dish drainer. This saves counter space, and I don't need a drain board. I wash and rinse my dishes in the first sink, and put them in the dish drainer in the second one. I have found that it is best not to use a sink mat on the second side, as mildew tends to form because the mat is not lifted and rinsed as often. So I put the dish drainer only on that side.
Rubbermaid is a name that I have come to trust for so many kitchen and bath accessories.