Will a straw fit thru the top opening? What is the diameter of the top sip opening

I’ve bought two of these at different times. The older one fit a straw easily, the newer one’s opening is much smaller, with some effort you can squeeze a straw into it but it’s jammed in very tight. Since they are glass, I think the opening size will be variable.

Will the 14oz double wall Tupkee tumbler be returning to stock ?

This item was a COMPLETE waste of $$$$$!!!!!

If the lid is made of glass, is it possible that after 2 weeks of use the mouth of the lid changed the shape from smooth to wavy? I used hot coffee as

No, for glass to change it’s shape, it would have to be heated to a temperature many times hotter than the hottest coffee.

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Tupkee Double Wall Glass Tumbler - 14-Ounce, All Glass Reusable Insulated Tea/Coffee Mug & Lid, Hand Blown Glass Travel Mug - Niagara

Tupkee Double Wall Glass Tumbler - 14-Ounce, All Glass Reusable Insulated Tea/Coffee Mug & Lid, Hand Blown Glass Travel Mug - Niagara

معرّف المنتج: 392482423

معاملة آمنة

التفاصيل

Brand
Tupkee
Material
Borosilicate
Colour
Niagara
Capacity
14 Fluid
Special features
Non-Slip

💎Hand blown borosilicate glass

🔥14oz double-wall insulation

🛡️FDA-grade leak-proof silicone seal

الوصف

☕ Elevate your daily brew with glass-crafted perfection—sip smarter, live cooler.

THERMAL TOUGHNESS - Hand blown borosilicate glass resists thermal shock—microwave and freezer safe for versatile use.
GRIP GO IN STYLE - Silicone sleeve and base provide a non-slip, stable hold—because your coffee deserves elegance and safety.
STAY COOL SIP HOT - Double-wall insulation keeps your beverage hot or cold longer while your hand stays comfortable.
LEAK PROOF CONFIDENCE - FDA-tested silicone seal keeps your drink secure, perfect for on-the-go hustle without spills.
PURE SIP ZERO COMPROMISE - All-glass lid ensures no plastic or metal aftertaste—taste your coffee as it was meant to be.

The Tupkee Double Wall Glass Tumbler is a 14-ounce, hand blown borosilicate glass travel mug featuring a leak-proof FDA-grade silicone seal and an all-glass lid for pure taste. Its double-wall construction offers superior insulation to keep beverages hot or cold longer while maintaining a comfortable exterior. Designed for durability and style, it is microwave and freezer safe, with a silicone sleeve and base for secure grip and stability—perfect for the discerning professional on the move.