TURN YOUR SHOWER INTO A RAINFALL POWER SHOWER EXPERIENCE. INCREASE WATER PRESSURE BY 300%. ABSOLUTELY NO TOOL REQUIRED. 30 SECOND INSTALLATION. JUST SCREW OFF AND SCREW ON. FITS ALL STANDARD SHOWER. Our Showerly Power Shower increases water pressure by 300%. Engineered with advanced physics and technology, we provide you the best shower experience possible. How exactly does is feel to experience a Showerly Power Shower? Imagine being under a warm waterfall or getting caught in soaking rainfall. Now take that same feeling and bring it to your warm and safe shower, and focus that water pressure directly on your body or areas of tension.