A. The material you choose is really a personal choice as there are benefits to each. Some of these pool showers are made of quality, commercial grade chrome-plated brass and stainless steel - meaning that some components (most notably valves and some shower heads) will be made of brass, while the body and other pieces are made of stainless steel - while others are ALL stainless steel. In general, brass is less expensive and better suited to certain applications (i.e., valves), while stainless steel (although more expensive) is more resistant to corrosion and will last much longer - it pays for itself in the long run. We recommend choosing whatever style outdoor shower or outdoor shower head you like and then considering your climate. The manufacturer recommends stainless steel if your home or business is near the ocean, as saltwater will eventually corrode even plated brass that is exposed to the elements. However, since these units do have standard 1/2" NPT connections, many brass elements like shower heads can easily be replaced with whatever you like. Additionally, it is recommended you winterize the unit when temperatures are consistently below freezing (32�F) by removing valves and shower heads to provide the longest-lasting service and avoid damage to these components.