Nemo Vortex Pump Sack Pump

Nice and light and packable, solidly made and does the job, although the connection needs a lot of wrenching to get on and off, which makes me worry that I could damage my Nemo Astro mat. Because you blow into it, it may still transfer some breath moisture into the mat, potentially causing mould, one of the main reasons to get a pump in the first place. And it'd be great if you could also use it on other mats. But it certainly makes blowing up a wide/long mat a hell of a lot easier after a long day's riding or hiking!

A must have

Bought this pump sack because I use my air mattress on a weekly basis, and I have to say its a time saver and the efficiency you get is unbeatable. A must have if you use an air mattress on a regular basis.

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.

Great pump sack but does not fit older NEMO pads

The NEMO Vortex works really well as long as the adapter fits the diameter of the pad outlet valve. A caution, NEMO changed their diameter sometime in the past five years. I had to find a custom gasket to adapt the new pump sack to the old pad, which is still functioning perfectly in all other ways. I think the product description should have pointed this out.

NEMO Vortex Pump

Bought this for a NEMO Cosmo™ 3D Sleeping Pad Long Wide because I use it in a small tent and the foot pump took too long when trying to inflate when you're kneeling. The Vortex worked great, about 6 full sacks and the inflation was complete. In addition it's pretty rugged and takes up very little space in my pack. .

Narrow opening

This was included with my Nemo Tensor pad. Opening in narrow compared to other pumps sacks I’ve used so makes filling a little slower but gets the jobs done. I’ve switched to small electric pump fore more efficiency

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.

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.

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.

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.