🥤Environmentally Material Tumbler Lid : Both of 30 oz tumbler replacement lids are made of high-quality AS crystal clear plastic, sturdy and durable. You can used it for a long time without fracture. these premium spill proof lids also designed to be a straw friendly stainless steel straight straw and bent straws and they are splash proof as well not sliding& slide&slider lids. 🥤Spill Proof and Splash Resistant Replacement Lids: Leak-proof lid is designed with a unique double-sealing technology, which can effectively isolate the contact between air and drinks, so drinks or water will not easily spill or overflow from the cups.( Please kindly note: this lid is Not fit for RTIC Tumbler). 🥤Easy to Use and Very Convenient：This replacement tumbler lid is designed with a sliding button, easy to slide and can be closed or opened with one hand, practical and easy to carry.#Please Note: the product may have a little error due to different cups or operation during production#. the lids& silicon rubber can be seperated for cleaning,dishwasher safe. 🥤Universal Size 30OZ Tumbler Lids: This replacement lid is suitable for most 30 oz stainless steel tumbler, such as YETI Rambler, Ozark Trail. ( Please kindly note: this lid is Not fit for RTIC Tumbler).In order to avoid inappropriate size, please confirm your tumbler size before order.