Heavy Duty Waterproof Refrigerator Mat or Shelf Liners to Prevent Stains & Dust

Not only can it be used as a kitchen liner to ensure the cleanliness, but also as a refrigerator mat to keep the freshness of food and fruits. The smooth side is non-adhesive so you can easily remove the liner but if you want fix the shelf liner, you can stick the four corners with double-sided tape.

eBay