Clear-top counter display mat displays promotional material Clear top cover lifts up easily for quick insertion of your content. Anti-skid rubber grip helps prevent slipping to keep the mat securely in place. Permanently bonded construction helps ensure long-lasting strength. Smooth top surface can be used as a writing pad for credit card transaction signatures. Artistic AdMat Counter Mat, 8 1/2in. x 11in., Black is one of many Sign Holders available through Office Depot. Made by Artistic.