A drop-in copper bathroom sink is a type of sink that is installed by “dropping in” the sink into a countertop or vanity. The sink is made of copper, which is a durable and corrosion-resistant material that adds a rustic and elegant look to any bathroom. The drop-in design allows for easy installation and maintenance, as well as a seamless look with the surrounding countertop. Copper bathroom sinks are known for their natural antimicrobial properties, which make them hygienic and easy to clean.