Thermos Stainless Steel Mug w/ Slide Lock Lid, River Rock, 18 oz
Thermos Stainless Steel Mug w/ Slide Lock Lid, River Rock, 18 oz
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Thermos Stainless Steel Mug w/ Slide Lock Lid, River Rock, 18 oz

140 ratings
Thermos Stainless Steel Mug w/ Slide Lock Lid, River Rock, 18 ozThermos Stainless Steel Mug w Slide Lock Lid River Rock 18 ozThermos Stainless Steel Mug w Slide Lock Lid Glacier 18 ozThermos Stainless Steel Mug w Slide Lock Lid Sandstone 18 ozThermos Stainless Steel Mug w Slide Lock Lid Snow 18 ozThermos Stainless Steel Mug w Slide Lock Lid Sunset Pink 18 ozThermos Stainless Steel Mug w Slide Lock Lid Saddle 18 ozThermos Stainless Steel Mug w Slide Lock Lid Mystical Navy 18 ozThermos Stainless Steel Mug w Slide Lock Lid Matte Stainless Steel 18 ozThermos Stainless Steel Mug w Slide Lock Lid Granite 18 ozThermos Stainless Steel Mug w Slide Lock Lid Crimson 18 ozThermos Stainless Steel Mug w Slide Lock Lid Plum 18 ozThermos Stainless Steel Mug w Slide Lock Lid Spruce 18 ozThermos Stainless Steel Mug w Slide Lock Lid Sea Green 18 ozThermos Stainless Steel Mug w Slide Lock Lid Melon 18 ozThermos Stainless Steel Mug w Slide Lock Lid True Timber Strata 18 oz
Actual ColorRiver Rock

Key item features

  • Thermos™ vacuum insulation technology for maximum temperature retention
  • Can be used for hot or cold liquids
  • High quality 18/8 stainless steel
  • Leak-resistant when closed
  • Slide lock drink lid that is straw compatible when open (Use straws for cold liquids only; straw not included)
  • Lumiview™ lid provides a clear view of contents
  • Griptec™ molded handle and non-slip, quiet, soft touch base
  • Fits most standard size cup holders
  • Disassembles easily for easy and thorough cleaning
  • Dishwasher safe (top rack dishwasher safe for added convenience)

About this item

Product details

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Customer ratings & reviews

4.5 out of 5 stars
stars
140 ratings57 reviews
How item rating is calculated
  1. 5 stars79% (111)
  2. 4 stars9% (13)
  3. 3 stars4% (5)
  4. 2 stars1% (1)
  5. 1 star7% (10)

Reviews summary

Pros

  • : Available in multiple attractive shades.
  • : Has an attractive and modern appearance.
  • : Designed to prevent spills when tilted or thrown.
  • : Made with sturdy and long-lasting components.
  • : Keeps coffee at a consistent temperature.

Neutral

  • : Can be ergonomic, but may feel loose for some users.
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Showing 1-3 of 57 reviews

Jun 20, 2026
Reviewer name: Theresa
Top Reviewer
Item details
Color: Plum
Sold and shipped byThermos LLC.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Tricky leak proof lid instructions

Ok. The lid is tricky the first time you open it but after you figure it out it's fairly easy. Luckily you have me to tell you how to do it. First turn the lid to the left until it stops. Then dig your fingernails into the crack between the cup and the lid and pull up - heave ho!!!!!! After you do it one time it will be easy. This lid configuration is what makes it leak proof so you can throw it on you purse or gym bag with no worries.

Helpful?6SC3OELIJMPT8455159717
Apr 16, 2026
Reviewer name: Carolyn
Item details
Color: Matte Stainless Steel
Sold and shipped byThermos LLC.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This thermos travel mug will actually keep hot drinks hot up to 9hrs. I have 2. I keep 1 to have coffee very warm while driving long distances and a 2nd one that will keep coffee 'hot' for hours. I have bought 4 as gifts.

Helpful?6SC3OELIJMPT8455159717
Jul 2, 2026
Reviewer name: anonymous
Top Reviewer
Item details
Color: Granite
Sold and shipped byThermos LLC.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great cup. Works great for cold and hot.

Helpful?6SC3OELIJMPT8455159717
Current price is $24.29
Price when purchased online
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  • Free 30-day returns

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Sold and shipped by Thermos LLC.
4.764359351988218 out of 5 stars
4.764359351988218 stars out of 5, based on 679 seller reviews(4.8)
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