Uber , Lyft , Shuttle bus , Rideshare , Tips Appreciated sign to encourage customer tipping - 7"x 3.5" Heavy Duty Acrylic Remind your customers tastefully that tips are appreciated, and not included in the fare, as they are led to believe. 100% Uber & Lyft Compliant! Size: 7"x 3.5" Heavy Duty 35 mil Acrylic. (about as thick as most credit cards) Multi-layered clear refective plastic finish for night time visibility Heat Resistant, up to 190 F Fahrenheit. Tear, abrasion, scratch, grease and fade resistant. Will Last for Years! Eliminate the need for you to bring up the subject of tips with your customers, and how important they are to your profitability.