Luna sippy lids are made of the highest quality silicone. They stretch over your cup to provide a strong seal that helps prevent spills. Our sippy lids are very flexible to fit on nearly every cup. Our lids are ideal for at home and on the go. Whether you are home or dining out at a restaurant, you can be rest assured knowing you will have a stress free experience with no mess or spills. Our sippy lids are light weight and portable. They are free from BPA, plastic, phthalates, PVC and lead. FDA approved. Dishwasher safe. Suitable ages from 3 months and up.