Flow Series
Best premium tumbler for commuters seeking pure, leakproof beverage enjoyment.
Embrace mindful moments with the Sttoke Flow Series tumblers, inspired by the concept of 'flow' to enhance your daily rituals. These tumblers feature a visually stunning ombre design, encouraging relaxation and self-care with every sip. Crafted with a shatterproof German-engineered Greblon® Ceramic interior, they ensure pure taste neutrality, free from metallic or plastic aftertastes. The double-wall vacuum insulation keeps beverages hot for 6 hours or cold for 8 hours. Designed for convenience, they are 100% leakproof and boast a unique parabolic bottom for enhanced flavor and easy cleaning. Available in 12oz and 16oz sizes, this award-winning design seamlessly blends luxury with everyday functionality.
$47.45
Owner Satisfaction
4.7
/ 5
Category Rank
302
/ 9217
#302 in Tumblers
Price vs Category Average
-10%
Below average
Materials
Eastman Tritan™, PP, Silicone, Greblon® Ceramic Coating
/ Eastman Tritan™, PP, Silicone, Greblon® Ceramic Coating
Who it's for
- Coffee purists prioritizing clean, untainted flavor profiles
- Commuters needing long-lasting heat retention for morning drinks
- Minimalists seeking a lightweight, ergonomic, and stylish travel cup
Who should skip it
- Clumsy users prone to dropping their drinkware
- Budget-conscious shoppers looking for an affordable everyday tumbler
- Busy individuals wanting a low-maintenance, easy-to-clean lid
Performance breakdown
Flavor Neutrality
Greblon ceramic interior ensures your coffee tastes exactly as intended.
Thermal Retention
Reliable insulation keeps beverages at temperature for your entire morning commute.
Leakproof Reliability
Confidence-inspiring seal prevents spills inside your bag or car.
Ergonomic Design
Award-winning shape fits comfortably in hand and standard cup holders.
Maintenance Ease
Parabolic bottom simplifies cleaning but requires hand-washing for longevity.
Durability
Shatterproof ceramic coating withstands daily drops better than traditional glass.
Key Specs
Materials
Eastman Tritan™, PP, Silicone, Greblon® Ceramic Coating
Capacity Options
12oz (350ml) and 16oz (460ml)
12oz Dimensions
Height: 15.6cm, Diameter: 8.2cm, Weight: 250g
16oz Dimensions
Height: 17.7cm, Diameter: 8.2cm, Weight: 290g
Coating Care
Use wooden or silicone spoons only
Warranty
2 Years
Interior Material
Greblon® Ceramic Coating
Insulation Type
Double-Wall Vacuum
Features
- Pure taste neutrality with ceramic interior
- Keeps drinks hot for 6 hours
- Keeps drinks cold for 8 hours
- Shatterproof ceramic coating
- 100% leakproof design
- Award-winning ergonomic design
- Fits standard cup holders
- Easy-clean parabolic bottom
What customers say
Customers overwhelmingly praise the Flow Series for its superior taste experience. The Greblon ceramic interior effectively eliminates metallic aftertaste, significantly enhancing coffee and tea flavor. Insulation performance is consistently reported as exceptional, keeping beverages hot for hours. Users also appreciate the stylish, ergonomic design and durable construction, noting it elevates the daily drinking ritual. While the premium price is noted, most agree the superior quality and taste justify the investment. Minor cleaning concerns regarding the lid mechanism are occasionally mentioned. Overall, this cup delivers a high quality, taste neutral, and aesthetically pleasing solution for daily use.
Know before you buy
Yes. The Greblon® Ceramic coating acts as a neutral barrier between your beverage and the stainless steel, ensuring you taste only your coffee or tea exactly as it was intended.
Yes, the tumbler is designed to be 100% leakproof, making it safe to toss into your bag during your commute without worrying about spills.
Because the interior is ceramic-coated, you should avoid using metal utensils that could scratch the surface. We recommend using wooden or silicone spoons and hand-washing the tumbler, as it is not dishwasher safe.
Both the 12oz and 16oz models feature a slim 8.2cm diameter base, which is specifically engineered to fit into most standard vehicle cup holders.
No, the Sttoke Flow Series is not microwave or dishwasher safe. Hand-washing is required to maintain the integrity of the ceramic coating and the vacuum insulation.
The double-wall vacuum insulation is designed to keep your beverages hot for up to 6 hours or cold for up to 8 hours, depending on your environment.
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$47