THESE GRIPTITE 2 TRAYS PREVENT SLIPPING AND SLIDING OF DINNERWARE AND GLASSWARE. THE HEAVY DUTY CONSTRUCTION ELIMINATES WARPING AND THE RUBBER LINER IS BONDED TO THE TRAY AND COVERS SIDE WALL ALONG WITH THE TRAY TOP TO PROVIDE EXTRA GRIP. THESE TRAYS ARE STAIN AND ODOR RESISTANT. DISHWASHER SAFE. NSF LISTED. 5 YEAR LIMITED WARRANTY AGAINST DEFECTS ON THE GRIPTITE 2 TRAY COLLECTION.