For a powerful showering experience in a low pressure area, the pression 1 function shower set in chrome works to boost the pressure of your shower, providing a more luxurious showering experience. Pressure Boost Presion works in a similar way to a nozzle on a garden hose. Without a nozzle, water flows freely but with little pressure. Add a nozzle, and the water pressure increases significantly. Our pressure boost handsets use similar technology in the bathroom to help you love your shower again. Low pressure? No problem! Presion.