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Our replaceable flip lid design is used to prevent liquid leakage. Once securely fixed, it will ensure 100% leak-proof performance, allowing you to feel at ease when using and storing the water bottle. Never worry about liquid spilling again.
Perfect Replacement: This set includes 2 PCS 40 oz replaceable tumbler flip straw lids designed specifically for Stanley , ensuring a seamless fit for your favorite tumblers.
Premium Material: Crafted from high-quality plastic, these straw lids are durable and reliable, providing a spill-proof and splash-resistant experience during your daily activities.
Versatile Compatibility: Compatible with Stanley Quencher, Stanley Cup, these replacement straw lids offer versatility and convenience for different tumbler models.
Reusable Design: The reusable tumbler cover allows you to enjoy eco-friendly drinking solutions while maintaining practicality and functionality for your hydration needs.
Ultimate Leak Protection: Stay worry-free with these spill-proof straw lids that offer ultimate leak protection, making them an essential accessory for your active lifestyle.

Leak proof
This is a great lid for the Stanley 40oz. I love that the straw is retractable and it is leak proof. Stanley is amazing but their lids are not good so this makes a perfect combo. I don’t love that the straw stays to the side of the cup instead of the centre though.
Does the job.
No leaks! Bout as a replacement cover for a friend who has a Stanley cup. It has made commuting with the cup much easier.
Does not fit 40oz Hyrdro Jug
Bought it to replace my hydro jug lid on my 40oz cup, it is too small. It is the same size as the 32oz lid, but does not screw into the cups. So not compatible with Hydro Jugs at all.
Doesnât fit Simple Modern Tumbler
Great quality lid but it doesnt fit the simple modern tumbler I had bought it for
Not, I repeat, NOT spill proof
Advertised as spill proof…. Not accurate.