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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Double Wall Glass Tumbler, 14-Ounce Glass Travel Coffee Mug with Lid

Product ID: 231328992

Details

Brand
Tupkee
Capacity
14 fluid
Color
Niagara
Material
Borosilicate
Special Feature
Double Wall

🌿Hand-blown borosilicate glass for durability & toxin-free sipping

🔥Double wall insulation keeps drinks hot or cold longer

🛡️FDA-approved BPA-free silicone seal for leak-proof confidence

45189CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☕ Elevate your daily brew with style and science—because your coffee deserves the best!

GRIP GO - Silicone sleeve and base provide a secure, non-slip hold for your busy lifestyle.
CRAFTED TO LAST - Hand-blown borosilicate glass resists thermal shock—microwave & freezer safe.
SIP PURE SIP CLEAN - All-glass lid ensures zero plastic taste or toxins—just pure flavor.
STAY HOT STAY COOL - Double-wall design locks in temperature while keeping your hands comfortable.
TRAVEL READY LEAK PROOF - FDA-grade silicone seal prevents spills, perfect for on-the-go hustle.

The Tupkee Niagara 14-ounce double wall glass tumbler combines elegant hand-blown borosilicate glass with advanced insulation technology. Featuring a leak-proof FDA-approved silicone seal and an all-glass lid, it delivers pure taste without plastic aftertaste or toxins. Microwave and freezer safe, with a non-slip silicone sleeve and base, this reusable travel mug keeps beverages hot or cold longer while ensuring durability and style for the modern professional on the move.

Specifications

ASIN	B08HYN273Y
Age Range Description	Adult
Best Sellers Rank	#18,081 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #340 in Tumblers & Water Glasses
Brand Name	Tupkee
Capacity	14 fluid ounces
Color	Niagara
Customer Package Type	Protective Foam Inserts or Bubble Wrap
Customer Reviews	4.2 4.2 out of 5 stars (2,365)
Finish Types	Glossy or Smooth
Global Trade Identification Number	00854395007645
Included Components	Glass Tumbler, Lid
Item Dimensions W x H	3.2"W x 7.5"H
League Name	ncaa
Manufacturer	Tupkee
Material Features	Insulated
Material Type	Borosilicate Glass
Number of Items	1
Occasion	Christmas
Other Special Features of the Product	Double Wall
Pattern	Solid
Product Care Instructions	Hand Wash Only, Microwave Safe
Product Style	Modern
Reusability	Reusable
Shape	Round
Size	14 Ounces
Theme	Food,Travel
UPC	854395007645
Unit Count	1 Count

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