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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🔥 Stay hot, stay cool, stay unstoppable! ❄️

TEMPERATURE MASTERY - Vacuum insulation locks in heat or chill for hours, so your drink stays just right.
SPILL FREE ON THE GO - Slide lock sealing lid ensures zero leaks, perfect for your commute or meetings.
EFFORTLESS MAINTENANCE - Dishwasher safe with minimal parts for quick, hassle-free cleaning.
SWEAT PROOF CONFIDENCE - Exterior stays cool and dry—no more embarrassing condensation rings on your desk.
DURABILITY MEETS DESIGN - Crafted from premium 18/8 stainless steel, built to endure your busiest days in style.

The Thermos TS1319GR4 Guardian Collection 12oz travel tumbler features advanced vacuum insulation technology that keeps beverages hot for up to 3 hours and cold for up to 10 hours. Made from durable 18/8 stainless steel, it offers a sweat-proof exterior and a leak-proof slide lock lid for secure, spill-free use. Lightweight and dishwasher safe, this tumbler is designed for professionals who demand reliable temperature control and sleek portability throughout their day.

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€ 52.52

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Netherlandsstore

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TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

2 months ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Brand	THERMOS
Model Number	TS1299DB4C
Color	Slate
Product Dimensions	8.26 x 8.26 x 16 cm; 331 g
Capacity	340 g
Material	Stainless Steel
Special Features	Manual
Item Weight	331 g

THERMOSTS1319GR4 Guardian Collection by Thermos 12 Ounce Stainless Steel Travel Tumbler, Blue

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