【Premium Material]】This tumbler lid replacement is made of premium plastic, reusable, sturdy, and dishwasher safe. 【Compatibility】This 20 oz tumbler lid is highly compatible, designed for glasses with a mouth diameter of 3.25 inches, and most other types of cups. Also fits 12 oz. coffee mugs. 【Leak Proof Design】 These tumbler replacement lids come with leak-proof silicone, the lid does not easily fall off, and is high temperature resistant, healthy, and safe to use. 【Straw Mouth】The air hole of this replacement tumbler lid is specially designed for straws, suitable for 6-9mm straws. 【Seal Design】 This tumbler lid adopts a unique vacuum seal airtight design, the beverage insulation and refrigeration time longer. The contoured beverage hole allows direct sipping or straw use. The lid is sealed and insulated to keep the beverage longer.