I'm Not Driving Too Slowly It's Called The Speed Limit Car Sign, Car Sign, Interior Car Window Sign With Suction Cup, Reusable alternative to a Bumper Sticker, Tailgating Sign, Tailgate Premium Quality Car Sign Designed and Manufactured Exclusively in the UK Supplied Complete With 20mm Reusable, Non Marking Suction Cup - Guaranteed to Stay Firmly in Place Super Vivid Colours, High Visibility. Suitable for all Makes and Models of Vehicles including Cars, Vans, Trucks and Caravans 14cm (5.5") High x 14cm (5.5") Wide - The Optimum Size for Viewing Without Obscuring Driver Visibility 100% Ready for Immediate Use. Sticks on to any window or smooth surface