Even when they are wet, Camtread Oval Trays will still grip beverages and meal service items. It's the ideal way to avoid costly spills, breakage and messes. Fiberglass construction with non-skid surface for long lasting use. Camtreads won't warp or crack. Can handle heavy weight loads which makes Camtread Trays a necessity in bars, banquet halls and dining rooms. Do not use Camtread Trays in enclosed heated carts.