Self-propelled mowers are lawn care machines designed to move forward on their own, making it easier for users to cut grass without needing to push the mower. They typically have a drive system that allows the mower to adjust its speed based on the user's walking pace, providing a more comfortable mowing experience. These mowers come in various types, including gas-powered and electric models, and often feature adjustable cutting heights. Many self-propelled mowers also include additional features like mulching capabilities and bagging systems, which help manage grass clippings efficiently while maintaining a neat lawn.