This Gardner's Blue Ribbon 10" vinyl saucers are a must for potted plants. These clear saucers easily catch excess watering, preventing surface stains and protecting carpets, floors, and furniture. Interior ridges keeps plant out of water - keeps plant roots healthy and provides for better plant growth. The ridged bottoms will not seal, either. The clear color of these vinyl saucers mixes and matches with all ceramic, clay, and plastic planters/pots. They're made of 100% recyclable plastic, yet they are strong and waterproof!