How long will my drinks stay cold?

6+ hours for a standard iced coffee (350g ice + 350g liquid) at 72 °F room temperature—without dilution-inducing freezer sleeves or extra ice.

What is the Ember Cold Tumbler made of?

A double-wall temperature-resistant borosilicate glass. The inner wall keeps flavor pure, while the outer wall creates a vacuum-insulated pocket for long-lasting cold drinks and a condensation-free exterior. Lid is made of BPA-free Triton plastic and silicone. Boot is made of silicone. Straw is made of BPA-free 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, spill-proof sipping.

Will the outside sweat or leave rings on my desk?

No. The double-wall vacuum 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.

Ember Cold Tumbler

$39.95 USD

*EXCLUSIVE* Preorder the new Ember Cold Tumbler now! Ships August

The all-new 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 for over six hours 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
Sliding Lid
Tritan™ Straw
Silicone Boot
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 for 6+ hours and eliminates condensation on the outside of the vessel.
Ready for Anything: Spill-proof with a sleek profile that fits most cup holders and makes to-go sipping a breeze.
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

Long-lasting

Cold Tumbler keeps iced drinks cold for up to 6+ hours.

Double wall insulated

Condensation free and never too cold to hold.

Glass Tumbler

High-quality glass preserves the taste of your drinks.

Spill-proof

Lid seals with secure straw holder gasket.

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

Enjoy your favorite iced creations with the versatile and spill-proof 2-Way Sliding Lid, which features our popular sliding lid and easily transforms to utilize an included straw.

Frequently asked questions

: 6+ hours for a standard iced coffee (350g ice + 350g liquid) at 72 °F room temperature—without dilution-inducing freezer sleeves or extra ice.
: A double-wall temperature-resistant borosilicate glass. The inner wall keeps flavor pure, while the outer wall creates a vacuum-insulated pocket for long-lasting cold drinks and a condensation-free exterior. Lid is made of BPA-free Triton plastic and silicone. Boot is made of silicone. Straw is made of BPA-free 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, spill-proof sipping.
: No. The double-wall vacuum 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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