Mainstays 40 oz Stainless Steel Tumbler with Straw and Handle, Double Wall Insulated, Green Hammertone
Mainstays 40 oz Stainless Steel Tumbler with Straw and Handle, Double Wall Insulated, Green Hammertone
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Mainstays

Mainstays 40 oz Stainless Steel Tumbler with Straw and Handle, Double Wall Insulated, Green Hammertone

4.4 stars out of 1794 reviews
(4.4)|
1,794 ratings
Mainstays 40 oz Stainless Steel Tumbler with Straw and Handle, Double Wall Insulated, Green HammertoneMainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Green HammertoneMainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Pink CheckMainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Purple HammertoneMainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Pink HammertoneMainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Purple Check2 pack Mainstays 40 oz Stainless Steel Tumbler with Straw and Handle Double Wall Insulated Green Check

Key item features

  • Durable Material: Made from 18/8 recycled stainless steel, ensuring a BPA-free and rustproof construction.
  • Insulated Design: Features double-wall vacuum insulation to keep beverages at the desired temperature for longer periods.
  • Large Capacity: With a 40-ounce capacity, this tumbler is perfect for staying hydrated throughout the day.
  • Reusable Straw: Comes with a reusable straw, making it an eco-friendly choice for daily use.
  • Convenient Handle: Equipped with a large handle for easy carrying and comfortable grip.
  • Versatile Use: Ideal for various activities such as swimming, sports, travel, camping, and parties.
  • Safe and Healthy: Made of food-grade stainless steel, ensuring no harm to human health and no metallic taste.
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Customer ratings & reviews

4.4 out of 5 stars
stars1,794 ratings831 reviews
How item rating is calculated
  1. 5 stars76% (1,357)
  2. 4 stars8% (138)
  3. 3 stars4% (72)
  4. 2 stars4% (70)
  5. 1 star9% (157)

Reviews summary

Pros
  • : Offers great value at this cost.
  • : Retains low temperatures over an extended period.
  • : Has various color options and a trendy look.
  • : Keeps beverages at low temperatures.
  • : Made with sturdy and long-lasting components.
Cons
  • : May break or crack under pressure or when dropped.
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Showing 1-3 of 831 reviews

Oct 28, 2025
Linda
Top Reviewer
Item details
Color: Pink Hammertone
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

40-ounce thermos for cold drinks

Glad that I found a 40-ounce thermos that was reasonable priced and loved the color it was available in and large enough for my tea or water. Very nicely made and well insulated for keeping your beverage cold.

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Oct 16, 2025
Ginni
Top Reviewer
Item details
Color: Pink Hammertone
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Great cup, just watch the handle...

Really good cup, but I didn't have it long before the handle came off. It doesn't affect the cup itself, but I was disappointed that the handle came off, and I didn't even have it a month.

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Aug 5, 2025
PAT
Top Reviewer
Item details
Color: Pink Hammertone
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Mainstay 40 oz tumbler

This tumbler is double insulated so it keeps the water or other liquids cold for a long time. I use it everyday. It also fits in my cup holder in the car. Filling up is easy.

Helpful?3VG4EIYIGIYV5369411655