Based on 87 reviews
A bit wobbly

The cup is ok but does not fold back in to the smaller cup sizes quite as easily as the video suggests. It also a little wobbly.

Very good alternative to disposable cups. I keep it in my bag so I can always be environmentally friendly!

Great cup!

Convenient, pretty and easy to use!

Nice design

The cup’s design is good as the water cannot spilt out easily.


I LOVE that it condenses to such a small size and is leak-proof. It feels like such good quality (much better than my previous keepcup which shattered) and I’m constantly showing it off to people! I’ve brought two more for Christmas presents.

The Be Minus One Cup Plus 550ml

The Be Minus One Cup Plus 550ml

The Be Minus One Cup Plus 550ml

Love my cup

This cup is easy to fold up and carry around. It’s just what I was looking for in a portable cup.

Functional but needs some improvements.

I like it very much when it opens easily.
But when the lid gets stuck, it's very frustrating that I dont want to use it anymore.


Just what i was looking for

The Be Minus One Cup Plus 550ml


Very happy with my purchase! the cup is great for university or school or whenever you don't have enough space in your bag! its also leak proof which is also a great feature! recommended, although the price is a bit high

Nice bottle~

Easy to carry in a shoulder bag~

The Be Minus One Cup Plus 550ml

The B minus cup

I am loving my cup so easy to take in my bag

Excellent Coffee Cup for Commuting!

Although it took me a few minutes to figure out how to collapse/expand the cup and to make sure the top was secure, I have really enjoyed using it. I can put it into my work bag to take to the office without a worry. One thing to note: since it has the carabiner clip on it, you cannot put the whole thing in the microwave to hear it up unless you remove the clip. I expect to use this for a long time.


Washes well in the dishwasher easy to fold pops back well when needed can carry on a belt loop good price, I use it at work every day for tea coffee or hot chocolate, as with my smaller one it can feel a bit hot under the crying circle but it soon cools down

Love the new design

Much improved lid and love the colour (grey)

The mini be minus

Excellent purchase. Very usefull. Highilly recommended.

Costa Cup

Very good description of the Costa Cup and Highly recommend this seller

Great travel mug

Compact folding travel mug that I can keep in the car and use if I stop for a drink on a long journey. Saves me some money and cuts down on waste so it helps the environment as well.


Love it