The Mare is a round single layer vessel constructed of thick 3/4" high tempered glass. With colors of blue and yellow, this vessel will add a splash of color to any bath. The molded bottom of the sink provides a unique look adding a sense of texture to the bath. As an industry leader in glass vessels, Novatto uses advanced technology to produce unique glass vessel sinks with unmatched structural integrity and longevity. Internal testing has found these vessels to be very durable and forgiving. For best cleaning results, a soft cloth with mild soap and water or a non-abrasive glass cleaner is recommended. Made with the highest standards of quality and creative design, Novatto sinks add art and function to any bath or powder room. This sink has a standard 1.75-inch drain opening. Suggested Novatto pop-up drains: PUD-ORB (oil rubbed bronze), PUD-BN (brushed nickel), PUD-CH (chrome ) or PUD-MB (matte black). Suggested matching mounting rings: MR-001ORB (oil rubbed bronze), MR-001BN (brushed nickel), MR-001CH (chrome) or MR-001MB (matte black). Novatto's customer service is always here to answer any additional technical product questions or help you choose a matching faucet.