Overall pick
Mainstays

Mainstays 40oz Teal Tumbler Stainless Steel Double Wall

Key item features

  • Stylish & Durable: The Mainstays 40oz Teal Stainless Steel Tumbler features a sleek teal design and is made of high-quality stainless steel, ensuring it is dent- and rust-resistant for long-term use.
  • Large Capacity: With a 40-ounce capacity, this tumbler keeps you hydrated all day, making it perfect for hot coffee in the morning or cold drinks in the afternoon.
  • Excellent Insulation: The double-wall design provides great insulation, keeping hot drinks hot and cold drinks cold, ideal for work, workouts, or outdoor activities.
  • Convenient Design: Equipped with a spill-proof lid and a comfortable handle, this tumbler is easy to use on the go.
  • Eco-Friendly: This reusable tumbler helps reduce plastic waste, making it an environmentally friendly choice.
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Current price is $12.44
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Customer ratings & reviews

4.3 out of 5 stars
stars
101 ratings34 reviews
How item rating is calculated
  1. 5 stars67% (68)
  2. 4 stars13% (13)
  3. 3 stars9% (9)
  4. 2 stars1% (1)
  5. 1 star10% (10)

Reviews summary

Pros

  • : Components come apart for cleaning.
  • : Product features a bright, bold teal shade.
  • : Fits snugly in car's cup holder.

Neutral

  • : Can be robust, but also prone to fragility.
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Showing 1-3 of 34 reviews

Feb 7, 2026
Lori
Top Reviewer
5 out of 5 stars review

Verified Purchase

Mega retention!

This mega size cup is a great find. The insulated quality retains the cold for a great deal of time. I put ice in it around 2 pm on a Friday and it still had a small amount of ice on Sunday evening around 10 pm. I'm glad it has a screw on lid so it can't slip off. It has a clear lid so it's easy to see the contents.

Helpful?77XKGFQ4SMIU13966471331
Jun 3, 2026
Susan
Top Reviewer
5 out of 5 stars review

Verified Purchase

Great mug!

This mug is excellent! It keeps drinks cold for over 24 hours. At under $10 it's as good or better than mugs I've had at $30. I would definitely recommend recommend!

Helpful?77XKGFQ4SMIU13966471331
Feb 4, 2026
sara
Top Reviewer
5 out of 5 stars review

Verified Purchase

True to size

I love my cup. I apologize for the late review. It is perfect. Fill it up with ice. Put my water in it and it stays nice and cold all day.

Helpful?77XKGFQ4SMIU13966471331