Mainstays 20 oz Stainless Steel Double Wall Tumbler, Straw Lid,Blue Color
Mainstays 20 oz Stainless Steel Double Wall Tumbler, Straw Lid,Blue Color
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Mainstays

Mainstays 20 oz Stainless Steel Double Wall Tumbler, Straw Lid,Blue Color

4.3 stars out of 575 reviews
(4.3)|
575 ratings
Mainstays 20 oz Stainless Steel Double Wall Tumbler, Straw Lid,Blue ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Blue ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Green ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Black ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Pink ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Purple Color
Actual Color:Blue-Out of stock
Black, $10.96
Pink, $10.96
Purple, $10.96
selected, Blue, $9.47, Out of stock
Green, $9.47, Out of stock

Key item features

  • Long-Lasting Cold: The double-wall vacuum insulation and durable 18/8 stainless steel construction keep drinks ice cold for several hours.
  • Ergonomic Handle: This travel mug features a handle designed for comfortable drinking.
  • Convenient Size: The 20 oz mug fits in most cup holders, making it perfect for use in the car or on exercise equipment.
  • Easy to Clean: The wide mouth design is easy to clean and dishwasher safe.
  • Straw Lid Included: Comes with a straw lid and two straws, allowing for four different straw placements to suit your drinking hand preference.
  • Versatile Use: Suitable for keeping drinks hot or cold for hours, ideal for various activities and outfits.
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Current price is $9.47
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Customer ratings & reviews

4.3 out of 5 stars
stars575 ratings185 reviews
How item rating is calculated
  1. 5 stars69% (399)
  2. 4 stars12% (71)
  3. 3 stars6% (37)
  4. 2 stars3% (19)
  5. 1 star9% (49)

Reviews summary

Pros
  • : Allows for convenient cleaning of straw and lid.
  • : Ideal for carrying and fitting in cup holders.
  • : Available in various attractive shades.
  • : Made to withstand drops and daily use.
  • : Offers quality at a lower cost.
Neutral
  • : Can be effortless with soft silicone straw, but also notoriously difficult for some users.
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Showing 1-3 of 185 reviews

Jun 9, 2025
Charlotte
Top Reviewer
Item details
Color: Blue
5 out of 5 stars review

Verified Purchase

My son's new favorite forever tumbler!

I have tried about a dozen different tumblers for my 2.5 year old son who loves water and this one is by far the best one! The size is perfect, design is super cute, no issues with leaking so far, overall it meets every requirement I'd have. Straw is easy to drink out of, no issues with suction. It keeps drinks cold with ice and we intend to purchase a second one. I would highly recommend this tumbler to anyone with kids!

Helpful?1XBPWO68IP4C13478860878
Dec 29, 2025
Diego
Walmart Associate
Item details
Color: Purple
5 out of 5 stars review

Verified Purchase

great buy!

the cup is great keeps hot and cold. kept ice for over 12 hrs. pretty good for a 10.00 cup. The one thing I don't care for is the suction power you need with the straw. it's truly leak proof so I get why you need to use a little more strength. aside from that the cup is awesome!

Helpful?1XBPWO68IP4C13478860878
Jan 15, 2026
Mikeymom
Item details
Color: Blue
5 out of 5 stars review

Verified Purchase

Cold all day

Delightful. Keeps beverages cold all day, seals tight, doesn't leak or drip. Easy top rack dishwasher cleanup. The straw is not a favorite. Don't like the texture and found it difficult to assemble for proper uptake. Insert a plasiic straw through the plug and it's perfect. Have two and will be purchasing at least one more.

Helpful?1XBPWO68IP4C13478860878