Superior Leak-Prevention: Our 4-pack lid gaskets seals are expertly designed to create a tight, air- and liquid-proof seal for your Stanley 40oz Adventure Quencher H2.0 Flowstate Tumblers and Stanley IceFlow 40oz Tumblers. Say goodbye to annoying leaks and spills, whether you're on the go, at the office, or outdoors Leak Prevention: Helps prevent leaks and spills, keeping your tumbler contents secure and your bag/surroundings dry Complete Package Contents: The packaging contains 4 sealing rings, 4 straws and 1 brush for comprehensive tumbler maintenance and replacement needs Universal Fit: Designed to fit Stanley 40oz Adventure Quencher H2.0 Flowstate Tumblers, but may be compatible with other similar-sized tumblers Hygienic Drink Protection: Replacement gaskets help maintain a clean seal to keep your drinks hygienic and fresh while preventing contamination from external elements 4 Pack Lid Gaskets Seals.Fit Stanley 40oz Adventure Quencher H2.0 & IceFlow tumblers. Leak - proof, keep drinks hygienic.Includes 4 straws and 1 brush