TREKOLOGY30L Pump Sack Roll Top Compression Pump Bag - Fit for UL Sleeping Mats - Quick & Easy Pumping Sack for Camping Mats, Inflatable Pad, & Sleep Mattress

Great size, fills mattress in 5-7 full bags. Doubles as a dry/stuff bag for your gear and can fit into the same stuff sack as the R7 mattress!

First I thought 30L was too big of a bag and contemplated getting a 10L. This is the right size, it inflated the mattress in 5 to 7 pumps (depending how much air I was able to fill the bag) and the construction material seems durable enough so that I can use it to hang my food or even use it as a pillow or even better to elevate your feet while asleep. I haven't tried using it as a sitting cushion but that's possible as well.

I bought this to go with a different brand mattress pad that did not come with a pump. This was one of the few that mentioned the nozzle size, and I was trying to match the opening on the pad. I came very close, but still had to attach a strip of gorilla tape to the nozzle to get an adequate seal (not the fault of the pump). It works okay, but it is difficult to get the bag any more than a 3rd full of air; the material is just thick enough that it collapses quickly back to a flat shape as I try to seal the top. I'm still learning with these bag pumps, but I since have acquired another brand pump that has a much thinner material, is longer in shape (similar volume) and is much easier to keep filled with air as I seal it. Still, this bag pump works, and perhaps with practice I could have mastered a more voluminous technique. It seems well made. I'm sure it could readily double as a dry bag and/or a back-country shower, though it is a bit on the heavy side for you ultra light backpackers, and if you have to use tape to seal it like I did, forget using the cap to hold water in it.

I had a small manual hand pump made by REI brand. Been used for many years, I get tired at the end of the day for long backpacking hikes. This large size waterproof air bag is awesome for camping pad and I used for clothes stuff sags and night time used for pump, one night used as soft pillows.It works very well, soft material and I can adjust air to make pillows cover it with my puffy jacket. 👍

Not necessarily useful.

I went on my first backpacking trip, so that meant limited gear that I was willing to hike 5 miles on my back.I watched the videos and read the reviews before buying this because I’ve never seen an inflator like this before and I wanted to try it out before taking it out to the woods. The reviews seemed more on the positive side so I decided to give it a try.Not sure what I was doing wrong, but the bag wouldn’t fill very much, so I started to worry. BUT, what little air I was able to trap filled the mat just fine after about a full minute of a new exercise I like to call “trap/fill” transfer, which I didn’t mind at all. I can see how this would annoy someone like my husband who can be impatient and is more of a tech nerd than I am and would go for a mechanical filler.It’s a bummer that this device isn’t included with the corresponding sleeping mat. But, the low price and light weight was well worth it. It also folds up nice and flat, taking up almost no place in my gear. I will be using this again.

I saw tests of this air pump bag on YouTube. Even compared to the fastest newest electric air pump took over 3 minutes to inflate the UL80-bed. This took about 17 seconds and inflated the mattress fuller and firmer than all the electric air pumps tested. Imo this is much more practical to use than an electric air pump as an electric one is an electric pump can break easily or not be waterproof. The unit could crap out and you're stuck!! I prefer this and recommend this air pump sack as in a rain storm this will inflate a bed faster than an electric one. And it's lightweight, only 8oz. And the other pumps don't inflate the ul80 mattress to a full or firm capacity. Or the other trekology air hiking or any other hiking or emergency use inflatable mattresses. This is an easy-to-use and versatile product. This can be used for storage of certain items like clothes, etc. Great value for the money!

Don't waste your money and time. Cheap doesn't equate to good.When trying to inflate the mattress, the connector pops out easily.Twice while filling the mattress, the movement of the filler bag caused the air port open the wrong way, letting all the air out. Twice.Also, the filler sack should be larger. Takes too long to fill.Finally, I tried to return this. What a waste of time! First message, "Which product?" Second message, "Why do you want to return it?" Third message "Take a photo of the product." That should have been said in one email! The company's return policy says that if you're unhappy with the product, for ANY REASON you can request a refund. The key words are "You can request" but they will do their best to grind you down, so that you give up and just take the thing to the donation station at the local thrift shop.