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Custom Gradient Tumbler High Quality 500ml Vacuum Insulated Flask
917 Reviews
✅ 500ml capacity gradient tumbler—ideal for daily hydration needs
✅ LED temperature display—real-time temperature reading
✅ Gradient color design—unique and eye-catching appearance
✅ Double-wall insulation—keeps drinks hot or cold for extended hours
✅ Customizable logo and design—ideal for promotional use
✅ Trusted tumbler manufacturer—supporting custom tumbler wholesale
Custom Gradient Tumbler 500ml Vacuum Insulated Flask
Revolutionary Temperature Monitoring Technology
As an innovative tumbler manufacturer, we’ve engineered this 500ml smart tumbler with groundbreaking temperature intelligence that redefines drinkware functionality. The centerpiece of our custom tumbler is its high-precision LED temperature display, providing real-time readings accurate to ±1°C/±2°F – a feature unmatched in standard tumbler wholesale products. This digital innovation solves the universal problem of guessing beverage temperatures, preventing scalded tongues from overheated coffee or diluted cocktails from premature ice melt.
The advanced sensor system works through a food-grade stainless steel probe that continuously monitors liquid temperature without compromising insulation. Unlike primitive temperature strips used in inferior 40 oz tumbler products, our digital display refreshes every 3 seconds and remains clearly visible in both bright sunlight and low-light conditions. The display automatically switches between Celsius and Fahrenheit with a simple button press, catering to global users – a thoughtful detail that elevates this custom tumbler wholesale product above competitors.
Complementing the digital display, our proprietary thermochromic exterior coating creates a mesmerizing color gradient that transitions smoothly across a 30-color spectrum as temperatures change. When holding whiskey or other spirits, the tumbler shifts from deep blues (0-10°C) through purples (10-30°C) to radiant reds (60°C+), creating an engaging visual experience that makes this tumbler of whiskey truly distinctive. The coating uses nano-scale liquid crystals that respond instantly to temperature changes while remaining durable against scratches and tumbler washing machine cycles.
Energy efficiency was paramount in our design. The display operates on a CR2032 coin cell battery (included) that lasts approximately 8 months with regular use. We’ve implemented an auto-shutoff feature after 30 seconds of inactivity to conserve power. Replacement batteries are universally available, ensuring long-term usability – a crucial consideration for tumbler wholesale buyers planning bulk purchases for corporate gifts or retail.
Custom Gradient Tumbler 500ml Vacuum Insulated Flask
Premium Material Composition & Safety Certification
Our commitment as a responsible tumbler manufacturer begins with material selection. This 500ml smart tumbler features medical-grade 304 stainless steel (18/8 composition) that exceeds FDA, LFGB, and SGS standards for food contact safety. Unlike cheaper tumbler wholesale alternatives that may use questionable 201 stainless steel, our alloy contains 18% chromium and 8% nickel, creating an inert surface that won’t react with acidic beverages like coffee, citrus juices, or alcohol – making it ideal as a tumbler of whiskey.
The double-wall vacuum insulation incorporates a copper-plated inner chamber that enhances thermal performance by reflecting radiant heat. Laboratory tests demonstrate 12-hour heat retention (starting at 85 °C) and 24-hour cold retention (starting at 4 °C), outperforming typical 40 oz tumbler products by 35%. The vacuum pressure is maintained at 10⁻³ torr, a space-grade standard that prevents thermal transfer through conduction or convection. This design applies the same thermodynamic principles seen in high-performance vacuum flasks that use a vacuum gap and reflective coatings to minimize heat transfer
We’ve paid particular attention to the mouth-contact components. The drinking rim uses surgical-grade 316 stainless steel, while the silicone gasket is FDA-approved and free from BPA, BPS, phthalates, and lead. These safety measures make our custom tumbler suitable for children’s use, though we recommend supervision due to the digital components. The materials withstand temperatures from -20°C to 120°C without degradation, verified through 1,000 accelerated aging cycles.
For commercial users and custom tumbler wholesale buyers, we provide complete material certification documents, including:
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FDA 21 CFR compliance reports
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EU REACH heavy metal test results
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California Proposition 65 compliance
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SGS food safety certification
The exterior coating uses an automotive-grade paint process with UV protection to prevent fading. Despite its sophisticated appearance, the tumbler is fully tumbler washing machine safe (top rack recommended), thanks to the hardened coating that resists abrasion from dishwasher jets.
Superior Insulation Performance for Hot & Cold Beverages
When it comes to temperature retention, our 500ml digital tumbler outperforms standard tumbler 40 oz products with advanced vacuum insulation technology. Designed for both hot coffee lovers and iced beverage enthusiasts, this custom tumbler keeps drinks at the perfect temperature for extended periods.
Scientific Heat & Cold Retention
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Hot Liquids (Coffee, Tea, Soup): Maintains heat for 12+ hours (tested at 85°C/185°F).
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Cold Drinks (Iced Coffee, Smoothies, Whiskey): Stays chilled for 24+ hours (tested at 4°C/39°F).
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Whiskey & Cocktails: Prevents ice from melting too quickly, making it an ideal tumbler of whiskey for connoisseurs.
The double-walled 304 stainless steel construction, combined with a copper-plated vacuum layer, minimizes heat transfer. Unlike cheap tumbler wholesale products that lose temperature quickly, our tumbler ensures your morning coffee stays hot until lunch and your evening whiskey remains perfectly chilled.
Who Benefits Most from This Technology?
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Office Workers: No more reheating coffee—your drink stays hot for hours.
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Travelers & Commuters: Keeps beverages at the right temperature during long trips.
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Outdoor Enthusiasts: Perfect for camping, hiking, or beach days.
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Whiskey Drinkers: Maintains optimal sipping temperature without dilution.
Additionally, the tumbler washing machine compatibility ensures easy cleaning after use, making it a practical choice for daily use.
Customization Process
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