What is the curved bottom part made of? Does it mar or grip the table?

The bottom is made of the same metal exterior as the rest of the travel tumbler. My tumbler has not marred or gripped the table.

Anyone have trouble unscrewing the lid once it's been on? Got this for Christmas. Great mug otherwise, but it's extremely hard to unscrew the top.

I believe that a hot beverage will create a vacuum and make the lid nearly impossible to open. However, it does screw on tightly, but I don't have too much trouble getting it off.

Are replacement lids available? I now have three of them with problems. They are recent purchases and fail on the slider. Almost no liquid comes out

I've had two which are used every week day for a couple of years and never had this problem. I hope you get some useful feedback.

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ALTA SERIES BY THERMOS Stainless Steel Tumbler, 12 Ounce, Slate

Product ID: 393091587

Details

Brand
THERMOS
Capacity
340 g
Colour
Slate
Included Components
Stainless
Material
Stainless
Recommended Uses For Product
Travel

🔒Leak-proof slide lock lid

🔥Keeps drinks hot up to 3 hrs

❄️Keeps drinks cold up to 10 hrs

60736CFA

Duties & taxes included

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☕ Stay hot, stay cool, stay ahead with ALTA by THERMOS.

TEMPERATURE MASTERY - Vacuum insulation locks in heat or chill, so your coffee stays hot and your iced tea stays refreshingly cold all day.
SPILL PROOF ON THE GO - Innovative slide lock lid ensures zero leaks, giving you peace of mind during your commute or meetings.
SWEAT FREE CONFIDENCE - No more awkward condensation—exterior stays cool and sweat-proof, keeping your hands and surfaces dry.
EFFORTLESS MAINTENANCE - Dishwasher safe with minimal parts for quick, hassle-free cleaning—because your time is valuable.
DURABILITY MEETS DESIGN - Crafted from premium 18/8 stainless steel, this tumbler is built to endure your busiest days with sleek, contemporary style.

The ALTA SERIES BY THERMOS 12oz Stainless Steel Tumbler combines advanced vacuum insulation technology with durable 18/8 stainless steel construction to keep beverages hot for up to 3 hours and cold for up to 10 hours. Featuring a leak-proof slide lock lid and sweat-proof exterior, it’s designed for professionals on the move who demand style, reliability, and convenience in their daily hydration.

Specifications

ASIN	B07XYRLP2P
Age Range Description	Adult
Best Sellers Rank	#613,747 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #706 in Insulated Tumblers
Brand	THERMOS
Colour	Slate
Customer Reviews	4.3 4.3 out of 5 stars (1,828)
Enclosure Material	Stainless Steel
Global Trade Identification Number	00041205739524
Included Components	Stainless Steel Travel Tumbler
Is the item dishwasher safe?	Yes
Is the item microwaveable?	No
Item Type Name	Stainless Steel Tumbler
League Name	ncaa
Manufacturer	THERMOS
Manufacturer Part Number	TS1299DB4C
Material Features	Insulated
Model number	TS1299
Number of Items	1
Occasion	Birthday
Other Special Features of the Product	Dishwasher Safe
OutputCapacity	340 g
Pattern	Solid
Product Care Instructions	Dishwasher Safe
Product Style	Contemporary
Recommended Uses For Product	Travel
Reusability	Reusable
Shape	Tumbler
Size	1 Count (Pack of 1)
Theme	Contemporary
UPC	041205739524
Unit Count	1.0 Count

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