Bathroom Furniture and Sanitary Ware Design POP Bathroom fittings by RUBINETTERIE ZAZZERI S.p.A. POP is “sensitive design” – sensitive to consumption and the environment. It has special features that permit considerable energy and water savings. With its colored, transparent silicon neck POP is cheerful and fun. You can twist and bend the neck, change its color and it lights up in the dark, to show the way. POP is safe because the spout is soft, and with its smooth finish is pleasing to the touch.