How long will my drinks stay cold?

The Cold Tumbler uses a glass double-wall construction to insulate your beverage and create a floating drink effect. The inner wall holds the cold in while the outer wall stays dry to the touch and prevents condensation rings on your desk or table.Between these two walls is an insulating air gap that significantly slows temperature transfer, keeping your beverage colder for longer than a standard single-wall cup. How long exactly? That depends on factors like your starting temperature, room conditions, and how often you open the lid. Results will vary.

What is the Ember Cold Tumbler made of?

A double-wall temperature-resistant borosilicate glass. Lid is made of BPA-free Triton plastic and silicone. Boot is made of silicone. Straw is made of BPA-free Triton plastic.

Is the Cold Tumbler durable enough for daily use?

Yes. It’s built from the same shock-resistant borosilicate glass used in laboratory beakers. A soft-touch silicone boot adds cushioning, prevents slips, and keeps table landings quiet.

Is the Cold Tumbler dishwasher safe?

Vessel is dishwasher-safe. Place lid on top rack only.

Will it fit my car or stroller cup holder?

With a diameter of 2.9 inches the Cold Tumbler is narrow enough for most US cup-holders.

How does the 2-Way Sliding Lid work?

Our 2-Way Sliding Lid screws into place and seals with a silicone gasket. Open the slider to sip similarly to a traditional single use to-go cup or close it and insert the included straw through the straw gasket for simple sipping.

Will the outside sweat or leave rings on my desk?

No. The double-wall insulation eliminates exterior condensation, so your workspace, bag, and cup-holders stay dry.

Why choose glass instead of stainless steel or plastic?

Glass is naturally BPA-free, won’t leach tastes or odors, and lets you admire your drink’s color and layering—no metallic after-taste, no plastic cloudiness—just coffee in its purest form.

Sale

Ember Cold Tumbler

$27.96 USD $39.95 USD

The all-new glass Ember Cold Tumbler was designed with iced coffee lovers in mind. For a long-lasting iced experience, it combines premium materials with on-the-go conveniences. The Cold Tumbler is crafted with temperature-resistant, double-wall insulated glass, keeping drinks cool and minimizing condensation. Its high-quality borosilicate glass makes it durable and easy to clean, all while preserving the pure taste of your drinks. With its innovative 2-way lid design and subtle aesthetics, the Cold Tumbler makes sipping cold coffee, tea, and even water what it should be – effortlessly chill.

Ember Cold Tumbler
2-Way Lid
Tritan™ Straw
Silicone Sleeve
Straw Cleaner
Instruction Booklet

: Taste the Difference: Ember Cold Tumbler is made of materials designed to maintain the taste of your beverage drink after drink, so every sip tastes like it did when it was first brewed.
Keeps Drinks Cold: Double wall insulation keeps your drinks cold and eliminates condensation on the outside of the vessel.
Ready for Anything: A sleek profile that fits most cup holders and makes to-go sipping a breeze. Spill-resistant lid.
Includes 2 Sipping Options: Our versatile sliding lid offers both a traditional coffee cup experience and a straw sipping experience. Tritan™ straw included.
Perfect Gift: Gift to others or yourself; this is the perfect gift that is sure to surprise and delight

16 oz (473 ml)

Dimensions: 4.65 in width, 10.63 in height
Weight: 2.65 lbs

Glass Tumbler

High-quality glass preserves the taste of your drinks.

Comfortably Cold

Cold Tumbler keeps your iced drinks cold, not your hands.

Double wall insulated

Condensation free and never too cold to hold.

Easy to clean

Made of durable borosilicate glass and dishwasher safe.

The difference is clear

The Cold Tumbler's double-wall borosilicate glass is not only durable; it showcases your favorite iced creations in a minimal yet intentional design that keeps flavors in their purest form, leaving iced drinks as you made them – delicious.

Two ways to sip

Sip your favorite iced creations confidently with a versatile 2-Way Sliding Lid, which enables you to choose from our popular sliding lid design or use the included straw. Simply close the slider and insert the straw into the color-matched silicone gasket.

Frequently asked questions

: The Cold Tumbler uses a glass double-wall construction to insulate your beverage and create a floating drink effect. The inner wall holds the cold in while the outer wall stays dry to the touch and prevents condensation rings on your desk or table.
Between these two walls is an insulating air gap that significantly slows temperature transfer, keeping your beverage colder for longer than a standard single-wall cup. How long exactly? That depends on factors like your starting temperature, room conditions, and how often you open the lid. Results will vary.
: A double-wall temperature-resistant borosilicate glass. Lid is made of BPA-free Triton plastic and silicone. Boot is made of silicone. Straw is made of BPA-free Triton plastic.
: Yes. It’s built from the same shock-resistant borosilicate glass used in laboratory beakers. A soft-touch silicone boot adds cushioning, prevents slips, and keeps table landings quiet.
: Vessel is dishwasher-safe. Place lid on top rack only.
: With a diameter of 2.9 inches the Cold Tumbler is narrow enough for most US cup-holders.
: Our 2-Way Sliding Lid screws into place and seals with a silicone gasket. Open the slider to sip similarly to a traditional single use to-go cup or close it and insert the included straw through the straw gasket for simple sipping.
: No. The double-wall insulation eliminates exterior condensation, so your workspace, bag, and cup-holders stay dry.
: Glass is naturally BPA-free, won’t leach tastes or odors, and lets you admire your drink’s color and layering—no metallic after-taste, no plastic cloudiness—just coffee in its purest form.

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