. Richly colored to complement any countertop, Neoroc resists scratches, stains, and fading and is highly heat- and impact-resistant.Cairn 27 Undermount Sgl Basin W/Rack This sink includes a bottom sink rack to keep the surface looking new. The Cairn sink is made of KOHLER Neoroc, a matte-finish composite material designed for extreme durability and unmatched beauty.