Adapt Convex Barrier Rings by Hollister are ostomy care skin barrier rings. They can be used to adjust skin barrier thickness for deeper convexity. These barrier rings can be cut, bent and stacked together to improve the fit of the skin barrier. They are also used to create a custom fit, including oval-shaped convexity. The thinness and flexibility allows these rings to be molded to the shape of the stoma. They are gentle and flexible and adhere well to the skin. The barrier rings are convenient to use.