These elephant silicone tops convert virtually any cup into a sippy cup! Simply stretch the top over your favorite cup or glass. We love using these over small mason jars for smoothies where a straw just isn’t wide enough for the frozen treat. This silicone material (think pacifiers and bottle nipples) is soft on your child’s gums and teeth, and will help in avoiding spills. The top can easily be cleaned with dish soap and water and is dishwasher safe. No BPA, phthalates, cadmium, lead, or metals.