FAQ

1. Q: Is this lid compatible with my 40oz Stanley Quencher tumbler?
A: ✅ ​Perfect fit guaranteed! Designed exclusively for 40oz Stanley tumblers with precision sizing for a leak-proof seal.

2. Q: Do I need tools to install it? Will it damage my cup?
A: 🛠️ ​No tools needed! 3-second snap-on installation. Zero scratches on the rim—easy to remove and reuse.

3. Q: Has the leak-proof performance been tested?
A: 🌊 ​Rigorously tested! Passed 24-hour inversion + shake tests. No leaks even during hiking or gym sessions.

4. Q: Does it fit other Stanley tumbler sizes (e.g., 20oz/30oz)?
A: ❗ ​Compatible ONLY with 40oz models. Confirm your tumbler’s capacity via the engraving on the bottom.

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