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Mainstays

Mainstays 18-Ounce Plastic Tumbler, Gray

4.7 stars out of 1801 reviews
(4.7)|
1,801 ratings
Mainstays 18-Ounce Plastic Tumbler, GrayMainstays 18 Ounce Plastic Tumbler GrayMainstays Dark Blue Round Plastic Tumbler 18 OunceMainstays Cream Round Plastic Tumbler 18 Ounce10 pack Mainstays Dark Blue Round Plastic Tumbler 18 Ounce10 pack Mainstays 18 Ounce Plastic Tumbler GrayMainstays Sage Round Plastic Tumbler 18 Ounce
Actual Color:Gray-Out of stock
Blue, $0.50
Cream, $0.50, Out of stock
selected, Gray, $0.50, Out of stock
Green, $0.50, Out of stock
Pack Size:Single-Out of stock

Key item features

  • Generous Capacity: 18 fluid ounce capacity - great for daily hydration
  • Durable Material: Made from durable, BPA-free polypropylene plastic
  • Compact Dimensions: Compact size: 3.5-inch diameter x 4.75-inch height
  • Matte Finish: Smooth matte finish in vibrant, solid colors
  • Everyday Use: Built to last - ideal for everyday use
  • Versatile Utility: Perfect for casual entertaining and gatherings
  • Indoor/Outdoor: Versatile for both indoor and outdoor use
  • Convenient Care: Microwave- and dishwasher-safe for added convenience
  • Color Options: Available in multiple colors - mix and match your style
  • Coordinated Look: Coordinate with other home essentials from Mainstays
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Current price is $0.50
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Customer ratings & reviews

4.7 out of 5 stars
stars1,801 ratings327 reviews
How item rating is calculated
  1. 5 stars84% (1,516)
  2. 4 stars9% (154)
  3. 3 stars3% (59)
  4. 2 stars1% (20)
  5. 1 star3% (52)

Reviews summary

Pros
  • : Made with thick material that withstands regular use.
  • : Holds average drink amounts comfortably.
  • : Available in a range of bright and bold shades.
  • : Holds a good amount of water or beverage.
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Showing 1-3 of 327 reviews

Sep 6, 2025
Jess
Item details
Color: Gray
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I love these cups!

These cups are versatile, easy to clean, easy for children to hold without slipping and they hold 18 oz. Great price for a well-made product. I bought 10 to replace some of our older cups. Definitely recommend, and I'll probably buy more in a different color!

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Oct 12, 2025
Mark
Top Reviewer
Item details
Color: Blue
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Cost-effective

We were spending quite a bit of money monthly for styrofoam cups. We use these for our clients to keep and re-use. It saves us a lot of money, plus is better for the environment. We have the clients use an acrylic/oil based marker and put their name on them. The clients can be very creative. They are perfect size for a cup of coffee as well as a cold drink. Price-wise they pay for themselves. They are sturdy and don't tip over as easy as the other cups. Very pleased.

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Jan 19, 2026
Joe
Top Reviewer
Item details
Color: Gray
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I buy these for a specific purpose, not for drinking. So, for what I use them for, these are the perfect size. I'm not too fussy on the color or the fact that they don't have a lid. For what they are, and for the cost, these are perfect.

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