Your takeaway coffee deserves better. KeepCup glass cups are borosilicate glass, splashproof, and sized to barista spec, so what's in your cup actually tastes like what went in. Recovered cork band for grip and warmth. Double-wall Longplay if you run hot (or cold). Available in 6, 8, 12 and 16oz.

4.6
KeepCup Brew Longplay M 12oz in Geisha, featuring a clear double-walled glass cup with a lime green silicone band and dark green lid with matching lime plug, photographed against a white background.
4.7
KeepCup Brew Cork L 16oz in Dawnbreak colour, featuring a clear tempered glass cup with natural cork band and red silicone lid with pink plug, shown at a slight angle against a white background.
4.7
KeepCup Booked & Busy bundle in Ink colour featuring two reusable cups: a glass cup with cork band and navy blue lid on the left, and a clear double-walled LongPlay tumbler with navy silicone band and straw on the right, shown against a white background.
4.7
KeepCup Brew Cork M 12oz in Dawnbreak, featuring a clear tempered glass cup with natural cork band and red lid with sipper opening, shown from a straight-on angle against a white background.
4.7
KeepCup Brew Cork S 8oz in Daybreak, featuring a clear tempered glass cup with natural cork band and red silicone lid with sip hole, shown against a white background.
5.0
KeepCup Sip and Chill Longplay in Frappe, a clear double-walled reusable cup with coral silicone band and straw, shown alongside a brown and coral replacement lid with sliding closure.
5.0
KeepCup Sip and Chill Longplay in Matcha, featuring a clear double-walled tumbler with light green silicone band and reusable straw, shown alongside a top-down view of the teal and green two-tone lid with sliding closure.
What makes KeepCup reusable glass cups sustainable?

The tempered glass range launched in 2014, pairing break-resistant tempered glass with a silicone or cork grip. It needs just 24 uses to beat the environmental impact of 1,000 disposable cup uses.

  • Break-resistant tempered glass: High-quality tempered glass containing 25% recycled material, paired with a silicone or cork grip.
  • Environmental payoff in 24 uses: The lowest break-even point in our range — glass carries nothing forward, so there is no taint and no transfer.
  • Designed in Australia and assembled here: Tested for food safety.

The 24-use figure comes from our independent peer reviewed 2018 Life Cycle Analysis.

Across the range: modular parts you can replace individually, single-material components that separate at end of life, independent food-safety testing, 100% recycled paperboard packaging, and made by a certified B Corp that gives 1% of global revenue to environmental causes.

What’s the best reusable glass coffee cup with a lid?

The KeepCup Brew Cork and Brew Glass ranges are made from durable tempered glass and come with splashproof, press-fit lids that make drinking easy on the move. Designed for coffee purists who want clarity, quality, and comfort, they’re barista-standard and made to last.

Is the lid on a KeepCup glass coffee cup leakproof?

KeepCup lids are splashproof, not fully leakproof — perfect for sipping on the go, not for tossing in a bag. The press-fit design with sipper plug prevents spills while giving you that café-style drinking feel.

What’s the difference between cork and silicone bands on KeepCup glass cups?

Both offer a secure grip and heat protection. The natural cork band is sourced sustainably and adds a soft, organic feel, while the silicone band is lightweight, flexible, and dishwasher safe. Choose cork for a warm, tactile experience or silicone for easy cleaning — either way, it’s reuse done right.

The Cork band has more thermal insulation and a wider grip so we offer with 16oz/450ml glass. We only offer the silicone band in 12oz size with a glass base.

What’s the best travel mug material for hot and cold drinks?

For the delicate taste of specialty coffee, it is hard to go past glass. It looks and feels beautiful, it is tactile, and because glass is non-reactive it carries nothing forward from the last drink — no taint, no transfer.

Tempered glass with 25% recycled content, paired with a cork or silicone band for grip and natural insulation. It needs only 24 uses to beat the impact of 1,000 disposable cups, the lowest break-even in our range.

If you want heat retention over hours, choose insulated steel instead. If you want the coffee to taste exactly as the barista made it, choose glass.

Are reusable glass coffee cups safe for hot drinks?

Yes. KeepCup glass cups are made from heat-resistant toughened glass designed to handle both hot and cold drinks, and the cork or silicone band protects your hands while keeping the warmth in the coffee.

On how long it stays hot: glass holds heat well for shorter coffee styles like flat whites, cappuccinos and piccolos — the drinks it was designed around. For longer-lasting warmth, the Longplay adds a double wall and a removable sleeve, insulating without much extra bulk.

Avoid thermal shock: do not take glass from the freezer to boiling water, or the reverse.

Do glass reusable coffee cups keep drinks hot?

Glass retains heat well for shorter coffee styles like flat whites and cappuccinos. For longer-lasting warmth, choose the KeepCup Longplay with a double-wall design that insulates without adding bulk.