· ✅ Premium Material - Made with top food grade crystal plastic. That can be in touch with the drinks directly.· ✅ SIZE: 20 oz - Top diameter 3.48 inch, Insert the diameter 3.25‘’(3.13'' diameter + 0.12'' elastic sealing ring), Choose the right size replacement lid for your tumbler cups.· ✅ 100% Splash Resistant - 20 oz tumbler lid spill proof, designed O-ring grommet sealed technology. No more worry about Splash Resistant especially when driving.· ✅ Straw Friendly - An independent vent has been designed on this lid. The air hole is compatible with straws less than 0.38" / 8mm diameter.· ✅ Compatible With - The tumbler leak proof lid are specially designed for 20 oz yeti, old rtic tumbler, and more 20 oz classic stainless steel tumbler, Such as BEAST, COMOOO, CHILLOUT LIFE,SUNWILL, Smart, Ozark Trails cooler.