Can be used under a glass table or on children's plates. Ideal for holding cell phones, aquarium decorations, string lights, and craft projects. Perfect for replacing worn suction cups. Made of soft silicone rubber that resists crushing and wear. If suction cups become deformed, soak in warm water for approximately 2 minutes to restore shape. Suitable as shock absorbers when transporting flat glass and mirrors. Provides secure hold to separate and cushion parallel surfaces in a horizontal position. Adheres to smooth surfaces such as ceramic, stainless steel, glass, mirror, refrigerator, and metallic paint. Also works on other smooth, non-porous surfaces. For best results, ensure the surface is clean and free of debris. If the surface is uneven or porous, air may enter and reduce adhesion. Clean the suction cup regularly. After cleaning, soak in warm water for about 1 minute to restore original shape before reuse.