A steam iron is a household appliance designed to remove wrinkles from fabric. It uses heat and steam to relax the fibers of clothing, making it easier to achieve a smooth finish. Most steam irons have a water reservoir that heats up, producing steam that is released through small holes in the soleplate. These irons come with various features, such as adjustable temperature settings for different fabric types, a non-stick soleplate for easy gliding, and a vertical steam option for hanging garments. Regular use of a steam iron can help maintain the appearance of clothing and extend its lifespan.