Got one to go with my Group cooker. Works well for keeping drinks warm. And includes bottom cover, that makes a handy cup/bowl.

did a trip in the winter with just one cup and instantly realized a second one would make my life tons easier. Why? I now have two and use one for melting snow exclusively and the other to cook in. When snowshoeing I usually do not stop for a long time to clean the cup after eating real well. just enough to not be too gross later. When I would use it to melt snow for drinking it would always have the taste of the last meal. Now I don't worry about that and I melt snow while I am eating out of the other one which saves me a ton of time. plus you can pack more stuff in the empty cup. very light I don't even notice that I have an extra one

Outstanding system. Bought this cup for my wife -- perfect size to cook up anything and change out is a snap. The Jetboil system is so versatile you have to wonder how you got along without it -- check out the accessories for this system and you will know what I mean.

Good for up to 2 people. this is what I take when I go backpacking when I have 2 people or less and I use the big pot for more people. I like how it actually hooks to the burner instead of just sits on it. it really helps out stability. I gave it four stars because I think the perfect shape would have been a little bit more shorter and wider. Would have liked a see-throughl lid.

The extra cup is fantastic and works like it should; it's also a good place to store an extra fuel canister and a couple of treats. I've had the JetBoil for a long time and never hit the trail without it being along. Now I just need a companion for my companion cup.

Love this cup! It's well made and practical. I can use the bottom as a measuring cup,...extra bonus. Great for soup, hot or cold drinks.

I purchased a second cup so that my wife could eat and we would not have to share cups. If you have a jetboil this is a great addition. Makes for light backpacking between me and my wife.

A must have on any trip. A total life saver!

Few hikers' items provide such near instant relief. This cup coupled with the Coffee Press are morale lifters for all groups. Whether a quick cup of soup or a steaming coffee are needed during a break from hiking, this item is all that it is advertized to be. Bottom line: this will be a 'must give' present to friends and family for years to come.

The jetboil 1 liter companion cup does the job It;s just like having two jet boils.

If you don’t already own a Jetboil—buy one, and if you do, you need this too. With the companion cup you can make coffee/tea/what-have-you in the original, and use the companion cup to boil water for oatmeal. Really, the possibilities are endless and you need this!!

I decided to get the Companion Cup for the same reason mentioned above. And it's true, it's perfect for making coffee in the first and oatmeal in the second. Or coffee/tea/etc for two people since you can use the same base/gas on either cup.