100+ bought since yesterdayBest seller
Mainstays

Mainstays 20 oz Stainless Steel Double Wall Tumbler , Straw Lid, Black

Mainstays 20 oz Stainless Steel Double Wall Tumbler , Straw Lid, BlackMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Black ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Green ColorMainstays 20 fl oz Stainless Steel Double Wall Tumbler Straw Lid Blue 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:Black

Key item features

  • Cold Retention: Featuring double-wall vacuum insulation, it keeps beverages ice-cold for hours, perfect for hot summer days or intense outdoor activities.
  • Durable Construction: Made from sturdy 18/8 stainless steel, this tumbler withstands daily bumps and scratches, ensuring long-lasting use.
  • Ergonomic Handle: Designed with an ergonomic handle, it provides a comfortable grip, making it easy to hold and drink from anywhere, anytime.
  • Travel-Friendly: With a 20-ounce capacity, it fits well in most car cup holders and exercise equipment, making it convenient for travel and workouts.
  • Easy Maintenance: The wide-mouth design allows for effortless ice addition and cleaning, and it's dishwasher-safe for added convenience.
  • Straw Lid: Comes with a straw lid and two straws, featuring a four-way threaded design for different straw placements based on your drinking hand preference.
Generated by AI
Current price is $9.97
Price when purchased online
  • Free 90-day returns

How do you want your item?

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
How do you want your item?
Columbus, 43215
Arrives by Today
.
Order within 12 hr 53 min
Sold and shipped by Walmart.com
Free 90-day returns - in store or online
This item is gift eligible
walmart plus

Get free delivery, shipping and more*

*Restrictions apply

About this item

Product details

Specifications

Warranty

Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars787 ratings210 reviews
How item rating is calculated
  1. 5 stars70% (550)
  2. 4 stars12% (92)
  3. 3 stars7% (55)
  4. 2 stars3% (25)
  5. 1 star8% (65)

Reviews summary

Pros

  • : Ideal for carrying and fitting in cup holders.
  • : Available in various attractive shades.
  • : Made to withstand drops and regular use.
  • : Offers quality at a lower cost.
Generated by AI

Customer photos

  • +121 images
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 210 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?1XBPWO68IP4C13453350769
Apr 12, 2026
T
Top Reviewer
Item details
Color: Pink
5 out of 5 stars review

Verified Purchase

while I absolutely love these, there should be a note somewhere about how to take the lid apart to clean because like the little air intake gauge mold can grow there and there needs to be like a pack of replacements for the lid made. other than that it keeps my drinks cold for a really long time

Helpful?1XBPWO68IP4C13453350769
Mar 12, 2026
Holly
Item details
Color: Black
5 out of 5 stars review

Verified Purchase

Really great quality metal cup, thick plastic lid, silicone wide straw. Leak proof when tipped over but sometimes after the cup sits for a while, the liquid will fill the straw and you have to be careful when lifting it so liquid doesn't shoot out of the straw. But it's a great cup and has lasted through my 3 year olds antics with it

Helpful?1XBPWO68IP4C13453350769