Home & Kitchen · Review

KeepCup Brew Glass Reusable Coffee Cup

A dishwasher-safe tempered-glass cup with a cork band and splashproof lid, so your coffee tastes like coffee, not plastic. A reusable that is actually nice to use.

🌿 Ecoxee decision: Worth it, if you actually carry it.

A reusable coffee cup only helps if you remember to bring it. If you buy takeaway coffee often, this is a lovely one to reach for; if you rarely do, or already own a cup, you do not need it.

Ecoxee is an Amazon Associate and may earn from qualifying purchases. Learn more.

Check Price on Amazon

Best for

Regular takeaway-coffee buyersPeople who dislike a plastic tasteCafés that discount reusable cupsA cup that survives the dishwasherDesk & commute use

Not ideal for

People who rarely buy takeawayAnyone who already owns a reusable cupBags where glass might breakThe absolute lightest optionFully spill-proof needs

Before you buy: do you actually need this?

Worth buying if…

You buy takeaway coffee regularly
Your café gives a discount for reusable cups
You want glass, not plastic, against your drink
You will genuinely keep it by the door or in your bag

Probably skip it if…

You rarely buy coffee out
You already own a working reusable cup
You know you will forget to bring it

The most sustainable option is often the one you already own.

Overview

Billions of takeaway coffee cups are thrown away every year, and almost none are recyclable thanks to their thin plastic lining. A reusable cup is the obvious fix, and the KeepCup Brew is one of the nicest to actually drink from, because the body is tempered glass rather than plastic, so your coffee tastes like coffee.

It has a natural cork band so you can hold it when it is hot, a splashproof lid for the commute, and it is dishwasher-safe. KeepCup is a B Corp, and the cup is designed to be used for years.

The honest catch is the one every reusable cup shares: it only helps if you remember to bring it. Glass is also heavier and more breakable than plastic, and the lid is splashproof rather than fully leakproof, so it is not one to throw loose in a bag upside down.

What we like

Tempered glass means no plastic taste
Natural cork band to hold it when hot
Splashproof lid for commuting
Dishwasher-safe
Many cafés discount reusable cups

Worth knowing

Glass is heavier and more breakable than plastic
Splashproof, not fully spill-proof
Only helps if you remember to bring it
The lid and seal are plastic
Costs more than a basic reusable cup

The honest trade-offs

The nuance most reviews leave out.

Any reusable cup only pays off after many uses. A cup used a handful of times and forgotten is worse than none at all.
Glass is inert and recyclable, but it is heavier to ship and can break if dropped.
The lid and seal are plastic and silicone, so not every part is as natural as the glass body.
Buying a nicer cup when you already own a working one is consumption, not conservation.

Sustainability breakdown

Our honest read on how eco-friendly this really is. Where we cannot verify something, we say so rather than guess.

MaterialsGood

Tempered soda-lime glass body with a natural cork band; the lid and seal are plastic and silicone.

Expected lifespanGood

Tempered glass is durable and dishwasher-safe, but it can break if dropped.

End of lifeModerate

Glass and cork are recyclable or natural; the plastic lid is not, and the mixed parts complicate recycling.

PackagingGood

KeepCup uses recyclable, largely plastic-free packaging.

Brand transparencyGood

KeepCup is a certified B Corp with clear material information.

If you don't buy it

If you already own a reusable cup, use that one, because the greenest cup is the one already in your cupboard. And if you rarely buy takeaway coffee, a cup you never carry helps no one. Buy this only if you are a regular takeaway drinker who will genuinely use it.

The Ecoxee verdict

The KeepCup Brew is one of the nicest reusable cups to actually drink from: glass, not plastic, with a cork band and a lid that survives the dishwasher. But a reusable cup is only as good as your habit of carrying it. If you buy coffee out often and will keep this by the door, it is an easy win that many cafés will even reward with a discount. If not, save your money and your cupboard space.

Check Price on Amazon