KeepCup Sizes Explained: Which Reusable Cup Suits You

Reusable cups are brilliant in theory, right up until you order your usual flat white and realise your cup is too small, or so big the coffee rattles around half empty. Getting the size right is the difference between a cup you actually carry every day and one that lives forgotten in a drawer.

Here is a plain-English guide to KeepCup sizes, matched to the coffees Australians actually drink.

KeepCup sizes at a glance

KeepCup builds its cups around standard cafe serving sizes, so each size lines up neatly with a familiar order:

• Small – 227ml (8oz): A piccolo, macchiato or a short, strong coffee. Compact and easy to slip into a bag or cup holder.
• Medium – 340ml (12oz): The all-rounder. Fits a standard flat white, latte, cappuccino or long black comfortably.
• Large – 454ml (16oz): For bigger milk coffees, mugs of tea, or anyone who likes a generous serve to sip slowly.

If you are unsure, the Medium is the safest first cup. It matches the most common cafe order and rarely feels too big or too small.

How to pick your size

Think about your regular order

The easiest approach is to size your cup to the coffee you order most. Short black or piccolo drinker? Go Small. Flat white or latte every morning? Medium. If you tend to ask for a large, choose the Large so your barista is not left with coffee that will not fit.

Consider where you drink it

A cup that lives in your car needs to fit the cup holder, so Small or Medium usually wins. If it stays on your desk all morning, a Large gives you a longer, slower drink. Commuters juggling a bag and a phone often prefer the lighter Small or Medium.

Remember the barista

Cafes pour to standard sizes. Handing over a cup that roughly matches a takeaway size makes life easier for everyone and helps you get the right coffee-to-milk balance rather than a half-filled cup.

What about iced coffee and cold brew?

Hot-cup sizes are built for espresso drinks, but iced drinks need more room for ice. That is where a dedicated cold cup earns its place. The KeepCup Cold Cup comes in Medium (340ml), Large (454ml) and a roomy XL (590ml) for long iced coffees and cold brew over plenty of ice.

If you want your cold drink to stay cold on a warm Aussie afternoon, the double-wall insulated Thermal Cold Cup (Nitro) holds the temperature for longer and suits nitro and cold brew especially well.

Which colour and style?

Once you have landed on a size, the rest is personal taste. The classic Original KeepCup is lightweight, splashproof and comes in a range of colours across Small, Medium and Large, so you can match your cup to your usual order and your style.

The quick answer

Most people are well served by a Medium 340ml for everyday hot coffee, a Small 227ml for short black and piccolo drinkers, and a Large 454ml or a Cold Cup for bigger and iced drinks. Choose the size that fits your regular order and you will actually reach for it every day, which is the whole point of going reusable.

Ready to choose yours? Browse the full drinkware range at Origins Supply Co.