American Standard’s durable, lightweight Americast tubs feature an improved StanSure slip-resistant surface that fully covers the floor of the tub and offers an easy-to-clean, bright white hue. The surface, providing 56% more coverage than previous designs, is now offered on all Princeton (pictured), Cambridge and Stratford bathtub models. It is a unique material that fully bonds a high-quality porcelain enamel surface over a robust layer of enameling grade steel and a thick layer of structural composite backing. This material is similar to that used in the aerospace and automotive industries for lightweight, yet strong, durability. 

American Standard.