Polyester Blend Comes in a white glossy finish with a super smooth glaze that is both durable and timeless. Made of high grade ceramic porcelain also known as vitreous china. The most common used bathroom sink material of all times. A vessel sink is a great way to add sophistication to the bathroom. Install by placing the sink on top of the countertop. Includes a standard 1 3/8" rear center faucet hole. Standard sized center drain hole of 1 3/4".