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NEMO Equipment Inc.
Vortex Pump Sack

3.3333333333333335 out of 5 stars
9 Reviews
Color:Lemon Green



Why We Like the Vortex Pump Sack

Gone are the days of nearly fainting while inflating a sleeping pad at high altitudes. Nemo's Vortex Pump Sack fills with light breathing, and you can breathe about a foot away from the sack to inflate it with as little condensation as possible for colder treks.


  • Pump sack inflates sleeping pads faster and easier than your lungs
  • Large-capacity chamber fills quickly with light breathing
  • Ultralight fabric packs small for backpacking trips
  • Item #NEMK01A
PU polyester
7.5 x 2 x 0.5in
Recommended Use
backpacking, weekend camping, winter camping
Manufacturer Warranty
limited lifetime

Overall Rating

3.5 based on 9 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 1 reviews
3 Stars - 1 reviews
4 Stars - 2 reviews
5 Stars - 3 reviews

What do you think about this product?


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2 out of 5 stars

November 21, 2023

Needs modifications to double as a Stuff Sack.

Nemo, your pads are awesome, I have two of them, really some of the best out there today. However this pump sack needs a redesign. Other pump sacks double as a watertight stuff sack for clothes or other items. This saves space and weight for ultralight hikers. Can you redesign this so the opening is larger similar to a stuff sack so you can fill it with clothes? Also the adapter to attach to pump up the Nemo pads should be closable. This would be awesome!


Originally reviewed on

1 out of 5 stars

June 2, 2023

opening too narrow- only 1/3 useful

Hard to want to use this pump sack after using other brands. The opening on this is just too narrow to flick open with the wrists - instead you get a mostly uninflated bag of air...1/3 at best. Too bad because I love the Nemo Tensor sleeping pad.

hobo bill

Originally reviewed on

3 out of 5 stars

February 18, 2022

Does its job and nothing else

I got one of these with a Tensor sleeping pad. It's nice to have and makes blowing up the pad easier, but I wish it could serve dual use as a stuff sack/dry bag like other manufacturers have. The opening is really too narrow to be useful for this purpose. It's fine for car camping but harder to justify if you are backpacking and trying to shave ounces from your kit.


Originally reviewed on

5 out of 5 stars

May 27, 2021

The right pump sack for the job

This pump sack works perfectly with the Nemo sleeping mats. It folds up nicely and yet also inflates the mat with only a few air loads. Great product. It would be nice if the valve was compatible with other mats, such as the Exped.

J Sharp

Originally reviewed on

4 out of 5 stars

April 15, 2021

perfect companion to my Tensor sleeping pad

I've always hated inflating my sleeping pad and seeing the condensation collecting...gross! I'm so glad I got this pump sack. It makes inflating easier - without the moisture collecting. It also doubles as a dry sack.


Originally reviewed on

1 out of 5 stars

September 10, 2020

Still inflates your sleeping pad with moist air

This came with my sleeping pad, winter expeditions require as little moisture as possible entering your sleeping pad (the purpose of these pump sacks is that they pump dry air into the bag and prevent the build up of condensation) this bag defeats that purpose by requiring you to inhale into it. Recommend getting a pad with the interested foot pump for winter expeditions and to avoid condensation.


Originally reviewed on

4 out of 5 stars

August 30, 2020

Smaller opening, but works fine

It works as advertised - the pump sack is included in each sleeping pad order, which I was unaware of, so this was essentially an extra and unnecessary purchase.


Originally reviewed on

5 out of 5 stars

August 30, 2020

Better than others, but not the best

I have used other manufacturers version and I think this is the best one if but for one issue... Please build this function into your sleeping mat stuff sack. There should be a reason that the stuff sack cannot also act as an inflation devi e so I have one less item to try to keep track of.


Originally reviewed on

5 out of 5 stars

December 10, 2019

Silly, I think not!

I received this with my Tensor ultralight sleeping pad. At first, this looked like a silly gimmick. Then I read the instructions, tried it and OMG! It worked fantastic! How did I ever live without it...


Originally reviewed on