The Beurer Steam Vapouriser SI40 is a steam vaporiser and inhaler designed for fast and effective relief from the symptoms of colds and infections such as bronchitis and sinusitis. The SI40 has a flexible mask which fits comfortably over your mouth and nose so that no steam escapes but is guided directly to the point of treatment. You can also add a saline solution or soothing essential oil to further enhance your treatment. The Beurer Steam Vapouriser SI40 has an adjustable nebulisation setting that's easy to increase and decrease during use and ultra-quiet operation.