Color-Changing Expand & Seal Bottle Tops

Tired of leaks, spills, or guesswork when storing liquids? Our patented expandable caps adapt seamlessly to bottles from 18mm to 38mm (e.g., olive oil bottles, kombucha jars), while the built-in color sensor changes from red to green when air-tight seals form—perfect for perishables like homemade sauces or infused oils.

✅ Key Benefits:
– 100% Leakproof: Triple-layer silicone gaskets outperform generic caps in stress tests (30% tighter seal vs competitors).
– Temperature Visual Cue: Cap turns blue at 40°C/104°F—ideal for monitoring warm beverages or heated ingredients.
– One-Hand Operation: Twist-lock mechanism secures in 3 seconds; no tools needed for frequent refills.

📊 Why Choose Ours?
| Feature | Competitor Caps | Color-Changing Expand & Seal |
|———————–|———————–|——————————-|
| Seal Confirmation | None | Red→Green visual indicator |
| Bottle Compatibility | 2-3 sizes | Fits 18-38mm openings |
| Longevity | 6 months | Reinforced silicone (24-month lifespan)|

Perfect for busy kitchens, craft breweries, or labs needing reliable sample storage. Dishwasher-safe design maintains functionality through 500+ cycles—30% longer-lasting than standard caps per ASTM testing standards.

Smart storage that adapts to you—no leaks, no waste.