Setup, Compatibility & Care
To ensure maximum effectiveness, align the lid carefully with the rim of your 12oz or 16oz paper cup. Press down firmly on both sides simultaneously until the lid is flush against the rim. These lids are compatible specifically with 90mm diameter cups; avoid forcing them onto smaller or larger containers, as this will compromise the leak-proof seal. Keep the stack of unused lids in a dry, room-temperature location away from direct sunlight to maintain the integrity of the plastic. Avoid stacking heavy objects on top of the lids to prevent warping, which could prevent them from seating correctly on the cups.