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

Augmented Reality Experiences

Extended Temperature Retention

Advanced Thermal Insulation

18/8 stainless steel withstands bumps, scratches.

Robust Steel Construction

Generous Drink Capacity

Universal Cupholder Fit

Comfortable Grip Handle

Includes straw lid, two straws, four-way placement.

Versatile Straw System

Wide-mouth design for effortless ice and cleaning.

Easy Fill & Clean

Hassle-Free Dishwashing

Personalized Style Choices

<ul><li>Cold Retention: Featuring double-wall vacuum insulation, it keeps beverages ice-cold for hours, perfect for hot summer days or intense outdoor activities.</li><li>Durable Construction: Made from sturdy 18/8 stainless steel, this tumbler withstands daily bumps and scratches, ensuring long-lasting use.</li><li>Ergonomic Handle: Designed with an ergonomic handle, it provides a comfortable grip, making it easy to hold and drink from anywhere, anytime.</li><li>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.</li><li>Easy Maintenance: The wide-mouth design allows for effortless ice addition and cleaning, and it's dishwasher-safe for added convenience.</li><li>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.</li></ul>

<ul> <li>ALL - DAY COLD RETENTION：Featuring double - wall vacuum insulation and sturdy 18/8 stainless - steel construction, it keeps beverages ice - cold for hours. Whether you're out for a fun day in the summer heat or engaging in intense outdoor sports, you can always enjoy a refreshing cold drink.</li> <li>DURABLE &amp; COMFORTABLE GRIP：This travel mug comes with an ergonomically designed handle, making it easy to hold and drink from anywhere, anytime. The high - quality stainless - steel material ensures its durability, withstanding various bumps and scratches in daily use.&nbsp;</li> <li>CONVENIENT FOR TRAVEL：With a 20 - ounce capacity, it fits well in most car cup holders and those on exercise equipment. Whether you're driving or working out at the gym, it's easy to place. The wide - mouth design allows for effortless ice addition and cleaning, and it's dishwasher - safe, bringing great convenience to your life.</li> </ul>

Material

Volume capacity

Features

Activity

This Tumbler is double walled and vacuum insulated to keep your drink hot or cold for hours. The cup is outfitted with an ergonomic handle, that is aesthetically designed for comfort. It comes with a straw lid and two straws so you can enjoy your favorite beverage on the go. The straw lid is four-way threaded to allow four different straw placements for your drinking hand preference. The tumbler made from 18/8 stainless steel and fits standard cupholders, and with a variety of color options, you can get an Emotional Support Water Bottle for whatever outfit or activity the day entails -- Take Us With You.

Assembled Product Weight

Brand

Count

Manufacturer Part Number

Color

State Chemical Disclosure

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title_shipToHome_date_delivery

Actual Color

Black

Blue

Green

Pink

Purple

Size

Ease Of Cleaning

Value For Money

Appearance

Durability

Drinking Experience

Ease Of Use

Handle

Build Quality

Cup Holder Fit

Spill-proof

Portability

For Kids

Temperature Retention

Style

Ice Retention

Capacity

Ideal for carrying and fitting in cup holders.

Offers good features and performance for the cost.

Straw and lid can be removed for cleaning.

Can be smooth with silicone straw, but often proves difficult due to design.

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!

My son's new favorite forever tumbler!

I like it and the state is made where it does not leak.. although if you are someone who doesn't want to kind of bite down or push down on the straw w/ your lips you would want to go with something else. However if that doesn't bother you then I highly recommend it!

This is one of the best thermal cups that I own I've bought two of them in blue and green and they are what I drink out of every day and my drink stays cold exactly like it's supposed to I love both of my thermal cups and I love the way the lid just screws on and stays where I put it

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.

Cold all day

I've been using this daily and it's honestly been really good for the price. It keeps my drinks cold for hours, and I love that it doesn't sweat on the outside. The purple color is super pretty, and the straw lid makes it easy to carry around with me. It feels sturdy and fits nicely in my cup holder too.

Great Everyday Cup

Works for elderly patients. The lid design makes it spill and dripproof.  Drop on floor or tip over a not a problem. the lid is very secure, and the issue with the lid is how difficult it can be to remove. the smooth lid edge makes it hard to grip and remove

I bought this for my 93 year old mom.  I thought the insulated mug style would be good for her to have water throughout the night.  She had to about suck her checks in to even get a sip though that terrible designed straw.  I cut the tip part off then put a regular straw into the straw that is permanently attached to the lid before she could get a decent drink from it.

The straw is terrible

This cup does not keep things cold very long.  It's an inexpensive double wall cup and only keeps my water cood (with ice) for only about 4 hours indoors.  ive ownedmore expensive cups that last for 24 hours.  That said it's a good looking cup, i like the lid and built in straw.

Double wall cup

I don't like the cup. Everything is good except the straw. It's horrible, Everytime I drink from it I imagine this is what it's like trying suck from a  dry cow teet. The whole point of a straw for me is to keep beverages off my teeth and that doesn't happen with this straw. U have to suck like your life depends on it. I figure if I cut the spill proof feature out I may be able to use this cup.

Don't recommend

WORST BUY OF 2025! I saw the ratings and didn't read the reviews. Big mistake. All I drink is carbonated water which does NOT work in this mug. It sprays and spills it all over. I've been embarrassed multiple times in public and at work with water pouring out of the straw during meetings. So mad! Plus the straw collapses on itself and makes soooo much noise when you sip. So not professional nor demure. Straight trash!

Spills Everywhere

Ease of cleaning

Value for money

Drinking experience

Customers praise the product's design for its simplicity, durability, and portability, with ease of cleaning and a comfortable cup design that fits perfectly in car cup holders. The product's exceptional durability and ability to maintain temperature control for hot and cold drinks are also highly appreciated. The vibrant color options and stylish appearance further enhance its appeal, making it a reliable and long-lasting option for daily use. Overall, customers are satisfied with the product's performance and aesthetic.

Durable and portable design with excellent temperature control

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

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