Pure Taste. Smart Sip. Everyday Hydration.
Clean. Minimal. Consciously designed for daily living. The KasaCore Borosilicate Glass Coffee Tumbler pairs thermal-resistant borosilicate glass with a protective silicone sleeve for a pure, clean sipping experience. No plastic aftertaste and no chemical leaching — just untainted flavor for your morning brew, iced beverages, or daily hydration. Pure glass inside, functional durability outside.
Why Borosilicate Glass?
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100% Pure, Unaltered Taste – Non-reactive glass prevents chemical leaching, keeping beverages free from unwanted plastic or metallic aftertastes.
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Thermal Shock Resistance – Engineered to transition smoothly between hot coffee pours and cold iced drinks without cracking.
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BPA-Free & Toxin-Safe – Built entirely with food-contact safe components for worry-free daily hydration.
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Stain & Odour Resistant – Non-porous surface cleans effortlessly without retaining stubborn coffee oils or leftover aromas.
Key Features
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Dual-Function Silicone Cap – Versatile lid features both a direct-drink hole for warm sips and an integrated straw opening for cold drinks.
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Protective Silicone Sleeve – Durable, textured jacket provides a comfortable grip, drop protection, and thermal comfort for hands.
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Clear-View Monitoring Window – Integrated vertical window allows you to monitor liquid levels and brew strength instantly.
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Spill-Resistant Seal – Snug-fit silicone lid prevents messy splashes and leaks during desk work and movement.
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350ml Compact Form Factor – Sized at 14 cm height and 9 cm width, fitting neatly in hand and standard car cup holders.
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Non-Slip Stable Base – Padded silicone bottom keeps the tumbler steady and quiet when placed on smooth desks or tables.
Perfect For
Office · Gym · Travel · Home Desk · Car Commute
Tip: Hand wash recommended. Periodically remove the silicone sleeve for a thorough, complete clean.
