The Grohe Grohtherm Cosmopolitan thermostats combine modern, minimalist design with award-winning thermostatic technology for relaxing shower enjoyment. Based on a simple aesthetic philosophy of extruding cylinders in perfect proportions to create balance and harmony, the pure design is enhanced by GROHE StarLight® chrome – a deep, luxurious finish, which resists soiling and tarnishing. For a water-efficient bathroom, the EcoButton on the handle enables you to reduce your water consumption by 50%.