Premium Silicone material with elegant design. Our lids are designed to hold their shape, be flexible but simple to handle, place, and remove, unlike other silicone covers that have a tendency to be flimsy and difficult to handle. Fits easily and provides an ultrasonic airtight seal on smooth-rimmed glass, ceramic, or porcelain containers or kitchenware. No more squabbling over plastic wrap or silicone stretch lids. The reusable Food Grade Silicone Cup Covers Lids are constructed of a strong, flexible material that is much simpler to clean. They can also be washed in the top rack of a dishwasher. You get combo color high quality food lid covers. 100% Food Grade Soft Silicone Made from High-Quality Silicone Seals tight on all smooth, prevent from dust, airtight and leak proof. Keep your coffee or tea hot.