This sponge holder is completely made of food-grade silicone, which is non-toxic, BPA-free, durable and not easily deformed. You can use it over your kitchen or bathroom sink to ensure it is dishwasher safe. This sponge holder is designed to hold all standard sponges. The sponge holder fits perfectly anywhere in the sink, freeing up counter space. This sponge holder lets you never have to worry about getting your sponge dirty or wet on your kitchen or bathroom sink. All sponges will sit perfectly on the sink. Clean the sink and keep it dry before vacuuming the sponge holder. Then press the sponge holder against the surface of the sink and squeeze the air to hold it firmly. Simply place the sponge on the sponge holder. The sponge holder can vacuum all clean and smooth surfaces, such as mirrors, glass, tiles, stainless steel plates, iron plates, aluminum plates and plastic plates. Applying petroleum jelly to the suction cups works best, especially with stainless steel sinks. (NOTE: Not suitable for painted walls, rough surfaces and wallpapers) Due to the open shape of the sink basket, the sponge can drain and stay clean. Plus, the sponge holder cleans quickly and keeps you dry while washing dishes. Ideal for kitchens, workplaces, bathrooms, craft rooms, laboratories, classrooms or offices.