Note: Before buying, please check the size of your cup and the cover. You could also compare the size of your own cup lid with our lid size to make it easy to confirm whether it fits your cup. Size: (30 oz)10cm/3.93inch Spill-Proof: With this lid, there is no more worry about the spill of water or drinks. It helps to prevent spill while turning over the tumbler and keep your drink insulated. High Quality Material: Made of AS crystal clear plastic which is BPA free, the lid can be in touch with the drinks directly. Featuring a new locking mechanism, the clasp is locking tight, liquid will never leak from the hole. Package includes: 1 * black spill proof and splash resistant tumbler lids,30 oz. This cup lid is suitable for most cups.Before buying ,please check the size of your cup and the cover carefully.