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The coolest cup you’ll ever use.

The GSI Collapsible Fairshare Mug makes sure you get exactly what you deserve. Whether it’s in your messenger bag for the day or your back pack for a week in the woods, the collapsible design is at home anywhere.

  • Collapsible design shrinks to 1.7 inch disk for easy packing
  • Silicone material is easy to clean and doesn’t retain flavors
  • Lid screws into mug for sure seal, making it great for rehydrating meals
  • Folding handle locks down for drinking and out for scooping and measuring
  • Has a 22 ounce capacity so you get your fair share of the grub

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Here's what others have to say...

What's the dry weight of this? Thanks!


I want to talk about my friend's jugs.

  • Gender:Female
  • Familiarity:I gave it as a gift but have feedback to share

Mugs. I said mugs -shifty eyes-

My buddy just picked up a pair of these MUGS and she's happy with them. I looked them over and they're pretty cool.

The lids aren't threaded, just a twist-lock design. They're too heavy for backpacking.

But, what a kickass compact item to have in your gearbox on a four wheeler ride or the glovebox of your pickup - if someone pops up with anything from cocktails to cheese popcorn, you're ready to bum your fair share.

Find some huckleberries? Pick your fair share!

Chance upon some hidden treasure? While your compatriots suffer from saggy, doubloon-laden pants, you can whip out you GSI Mug and nab a retirement fund. Sure, you'll all suffer a pirate curse but your pants will fit properly because you had the right gear on-hand!

Is a picture of your friend's jugs forthcoming? (Quick shoe gaze)

I clicked in here to request a picture. I guess we are all the same!

Would you say you've seen your FAIRSHARE of jugs? I can't stop, it's a disease. GSI should develop a bra, clearly there's interest.


Great item but a little big

  • Familiarity:I've used it several times

This might be better marketed as a collapsible bowl than a mug. It is quite large. But still awesome! Buy it!


Super Handy

    Great for soup or drinking from. You can store liquid in it, but it is not fully sealed so if your moving around a lot you'll want a nalgene. I was making john daly's using this and my Katadyn water filter from a ducky on the Green river, pretty cool!


    Shoots itself in the foot for my purpose

    • Familiarity:I returned this product before using it

    Key words: "MUG", "LID". One would think you could carry a beverage around...

    Snope! The model I received had a small silicone stopper in roughly the same location as the tiny pinhole in the lid barely visible in the product photo. On the plastic lid GSI inscribes: "PRESSURE RELEASE VALVE" (by the hole) and "NOT FOR STORING LIQUID".

    This hole hobbles an otherwise tight locking seal at the lid to mug interface. I bought it to, I dunno, carry a protein shake to the gym in and then pack away. Sadly there doesn't appear to be a product on the marketplace to handle this sealable, collapsible cup problem despite this product's tease / promise.


    More like a portable bowl than a mug

    • Gender:Male
    • Familiarity:I've used it once or twice and have initial impressions

    I bought this looking for a mug for coffee in the morning and refreshments in the evening. its a little on the large size but it would be great for something like a serving of ramen or dinner in a bowl. Very light weight, different positions for handle is nice, collapsable makes for easy storage inside or outside bag. Bottom line, if your looking for a deep bowl with a handle, buy this "mug"


    Great mug

      I got this with 2 of the collapsible sea to summit cups, and found that the 2 cups will fit into this giant mug, and is only 2.5" thick all together. The locking lid is bomber, I love the handles 3 locking positions, and can't imagine when I'll ever need to replace this. I'll still keep my "sierra cup" on stand by for a bit, but I think that these are the future!

      Will this mug handle boiling water with...

      Will this mug handle boiling water with no problem for years of use?

      Hey there,
      i would be hesitant to pour "boiling' water into this mug. The materials, plastic (of an unknown composition ie. #2,#3 etc) and silicon may degrade with frequent exposure to boiling water. Also, the cup will be very hot after you pour in boiling water and may be difficult to hold with only the handle as you try to pour carefully into it while sitting exposed on an expedition. be careful with the temps, let your water cool a bit before pouring or get a steel mug with an insulator, like a coozie or something

      I recently used this mug on a 3 day camping trip. I poured boiling water into it several times for coffee and hot chocolate. The mug handled coffee just fine. However that was just for one weekend. Only time will tell how it holds up over the coming years.


      Great product!

        Used for numerous backpacking trips...tough to get it to collapse just right at first, but gets easier. Would definitely recommend!