The glazed overstain effect highlights the ribbed walls and embossed paw in the bottom. The integrated rubber base makes them skid and noise-free and of course, they are top-rack dishwasher safe. Key Benefits * Glazed overstain effect highlights the ribbed walls * Naturally bacteria-resistant * Low noise * Removable rubber base prevents skids/spills * Dishwasher safe, please remove rubber ring before washing from base.