Here are some key features and functions typically found in steam irons:

1. Steam generation: Steam irons produce steam by heating water in the built-in water tank. The steam is released through small holes on the soleplate, allowing it to penetrate the fabric and relax the fibers, making it easier to remove wrinkles.
2. Adjustable temperature settings: Most steam irons have adjustable temperature controls to suit different types of fabrics. This feature ensures that you can select the appropriate heat level for delicate fabrics like silk or higher temperatures for sturdier materials like cotton.
3. Variable steam control: Many steam irons allow you to adjust the steam output according to your preference or the garment you’re ironing. Higher steam settings can be used for stubborn wrinkles, while lower settings are suitable for delicate fabrics.
4. Spray mist function: Some steam irons have a spray mist feature that can dampen the fabric slightly before ironing. This can be helpful for stubborn wrinkles or to add moisture to dry fabrics.
5. Vertical steaming: Certain steam irons offer a vertical steaming function, allowing you to remove wrinkles from hanging garments or drapes without needing an ironing board.
6. Self-cleaning and anti-calcium systems: To prevent the build-up of mineral deposits from the water, some steam irons come with self-cleaning or anti-calcium systems. These features help to prolong the life of the iron and ensure optimal steam performance.
7. Safety features: Modern steam irons often include safety features such as auto-shutoff, which automatically turns off the iron when it’s left unattended for a specific period. This is a crucial safety measure to prevent accidents.

When choosing a steam iron, consider factors such as wattage, weight, cord length, and additional features that suit your ironing needs. It’s also recommended to read reviews and compare different models to find one that fits your requirements and budget.