Perfect Compatibility - Specifically designed for the 40 oz tumbler, these leak-proof flip straw lids fit tightly with the Stanley Quencher H2.0, ensuring a snug and secure fit for optimal performance. 100% Leak-Proof Design - The 40oz Stanley flip straw lid features a leak-proof design that keeps your drinks secure, allowing you to carry it anywhere without worrying about spills or messes. 100% Leak-Proof Design - The 40oz Stanley flip straw lid features a leak-proof design that keeps your drinks secure, allowing you to carry it anywhere without worrying about spills or messes. Includes Everything You Need - This set includes 2 leak-proof replacement lids and 2 sturdy straws in six colors—black, deep blue, light blue, magenta, white, and beige—giving you plenty of options to suit your taste. Note: You can cut the length of the straw to fit the size of your cup! 2-pack 40 oz Leak Proof Tumbler Flip Straw Lid Replacement Compatible with Stanley Quencher,Spill Proof Splash for Stanley 40oz Tumbler Lid Replacement Reusable Tumbler Cover for Stanley Cup Accessories