What is a rain shower head? Designed to give the experience of showering in the rain, rain shower heads are often engineered to deliver multiple settings from drenching rain storm to a water saving trickle. Waterpik RPB-173 rainfall shower head comes with just one setting that is the drenching rain mode. The drenching rainfall provides gentle droplets of water on the skin with a full body spray coverage. “Supreme” Shower Head Reviews See Details on Customer Reviews (back to top) This is refreshing. Not just the showerhead, but the idea that a company actually delivers on what it claims. The AKDY brand offers another great rain shower head. The entire body of the shower head is made of solid durable plastic. It comes in a chrome finish, which gives the unit a bright and mirrored look. It features a sleek thin square design, measuring 8 inches on all sides. What Is A Rain Shower Head? A rain shower head is designed to make its water output resemble anything from a light drizzle to a romantic waterfall. .