Lid features a scored tab that can be pushed back and locked into place for an enjoyable sipping experience. Tight seal creates a strong seal on cups to help prevent leaks and spills. Odorless design prevents altering the taste of your beverage. Lid is designed for use with Solo 410RCJ8484, 412PLNJ7234, 316PLAJ7234, 412RCNJ8484, 316RCJ8484, 420PLAJ7234, 420RCJ8484, 410PLAJ7234, 410SI0041, 410JZ00055, 410MS0029, 410SMJ8000, 410W2050, 412SIN0041, 412JZ00055, 412MSN0029, 412SMJ8000, 412WN2050, 316SI0041, 316JZ00055, 316MS0029, 316SMJ8000, 316W2050, 420SI0041, 420JZ00055, 420MS0029, 420SMJ8000, 420W2050, 424SIN0041, 424JZ00055, 424MSN0029, 424SMJ8000 and 424WN2050 cups (sold separately).