- Dimensions: These bamboo lids feature a top diameter of 2.75 inches (70 mm) and a bottom diameter of 2.36 inches (60 mm), perfectly designed for glass cups with a bottle mouth inner diameter of 2.36 inches (60 mm). The straw hole measures 0.39 inches (10 mm), compatible with most standard straws. - Natural Bamboo Material: Crafted from natural bamboo, these lids are free from harmful chemicals such as lead and BPA. They are ideal for covering your favorite beverages like tea, latte, coffee, cola, and soda water without compromising your health. - Leak-Proof Design: Each lid comes with two silicone sealing rings, including a double-layer mouth sealing ring that ensures exceptional leak protection. You can rest assured that your drinks will stay securely contained, even if the cup tips over. The straw hole sealing ring also safeguards your glass straws. - Versatile Compatibility: Designed to fit a wide range of drinking jars, these bamboo lids are suitable for common sizes of 16 oz, 20 oz, and 24 oz glass cups. Always measure the inner diameter of your bottle neck before purchasing; a standard 2.36 inches (60 mm) is required for a perfect fit. - Practical Applications: Use these lids for outdoor picnics to prevent spills, at home during coffee breaks to keep drinks warm, or for meal prep to seal jars of smoothies and juices. They offer convenience and reliability for any drinker.