Paddle shifters refer to a type of gearshift system commonly found in manual transmission vehicles. It is an additional shift mechanism that allows drivers to manually select and change gears without having to use a clutch pedal. The paddle shifters are typically located on the steering wheel or behind the steering wheel, allowing for easy access while driving. This feature provides more control over the vehicle's acceleration and speed, as well as improved performance in certain driving conditions such as hill climbing or aggressive cornering.