Sea to Summit eVent Compression Dry Sack



Perfect compression sack. It's been a while since…

Rating: rated 5 of 5 stars
Source: bought it new
Price Paid: $35


Perfect compression sack.


  • light
  • waterproof
  • looks good


  • bit expensive

It's been a while since I've been backpacking, and when assembling some gear to get back into it, I realized I'd need a compression sack for my sleeping bag. I'd used Granite Gear bags in high school, and was about to buy one of those when I noticed the awards and glowing reviews about this bag. It's all the Granite Gear sacks offer, but waterproof. And it looks great.  

Its super easy to use, just stuff it, roll the plastic thing on the top a few times, clip the buckle, put the top on, and cinch it down. I've used an REI 20 degree synthetic bag in the size M 15 liter bag, and it fits like a glove, and compresses it down to about half of what it is in the normal stuff sack.  I could probably get it even smaller if space was an issue, but I'm using a Bora 80, so not too much of an issue...

Features are fantastic. It does exactly what it's supposed to do, compress the sleeping bag, but it's waterproof to boot. Just a little more peace of mind that if the rain soaks through my pack and pack cover, I can at least sleep dry that night. Also, I've used the compression sack as a bear bag in the past, and the waterproofness of this sack will be even better, keeping the food and whatnot dry in the event of a storm.

Construction is top notch. The feel of the bag is light, but quality. The color scheme is nice, no goofy colors, and eVENT! It's probably overkill on this bag, but it's cool nonetheless. It's easy to see how air permeable the membrane is when you compress the sack and hear the air coming out the walls of the sack. All the straps and buckles are double stitched and reinforced. I didn't have any qualms about cinching it down really tight, and all the buckles hold nicely.  

Fantastic piece of gear. It's so nice when a company gets every little detail right, especially on the little things.  It makes it that much easier to buy it and trust it.


I've had one of these for about a year. Price seemed steep to me, but it's well worth it and one of the most quality pieces of gear I own!

3 years ago

These roll-tops are great! I highly recommend these…

Rating: rated 5 of 5 stars
Price Paid: $40

These roll-tops are great! I highly recommend these to anyone. I used the 17-liter size on several canoe treks and have had no leaks. They are lite and easy to use.


Made very well. Compressed easily and well. I used…

Rating: rated 5 of 5 stars
Source: borrowed it


Made very well. Compressed easily and well.


  • Multiple sizes
  • Waterproof
  • Compressed well

I used a friend's last year and am very excited to have my own this year. I like the roll top better than the draw string and love the buckle it uses to stay firmly rolled. The compression straps work great. 


Worked decent, however if I were to hang it from a…

Rating: rated 3.5 of 5 stars
Source: bought it new
Price Paid: $30


Worked decent, however if I were to hang it from a tree at night and it happened to rain, all of the contents would become wet. Carried two of these on my Appalachian Trail thru-hike in 2012.


  • Compression system works great


  • Doesn't really keep contents dry

These were… pretty good compression bags. I mean they compressed really well. They just didn’t really keep my stuff dry. I used two of them, a 10L and 14L if I can remember correctly. I used one for my food and the other for my sleeping bag.

If I hung my food bag from a tree one night when it happened to rain, I would take it down the next morning and all of its contents would be pretty damp. In fact one time, I had some Dots candy and a bunch of hot chocolate that pretty much melted all over everything else, so I wasn’t too happy about that. I ended up having to throw some stuff away and wash out the sack at Nuclear Lake.

I do like how well it compresses though, especially the sleeping bag, and I would definitely recommend it for the sleeping bag because you definitely don’t want to get your down bag wet and will generally act as a good barrier while you keep it in your pack.

In the end… well if you get them then fine. If you don’t, that’s ok too.


This is the compression dry sack that you want for…

Rating: rated 5 of 5 stars
Source: bought it new
Price Paid: $34.95


This is the compression dry sack that you want for your sleeping bag. It will keep it dry and allow you to pack it down small.


  • Waterproof protection
  • Compression capability


  • none

I use this compression sack for my sleeping bag for backpacking. It is easy to get the bag in, compress the bag.  Because this is waterproof it is important prior to folding it down to get as much air out of the bag as possible.  The construction design allows me to quickly compress the bag down.  

This is an extremely durable sack and look forward to using it in years to come!


I gave it four point five out of five because i like…

Rating: rated 4.5 of 5 stars
Price Paid: $20 (close out)

I gave it four point five out of five because i like clips to pop the bag open quickly. but it is a great sack.

Its bag was an upgrade for a DIY bag made, I wanted something that was water proof but buying eVent by the yard is very expensive. I Googled "waterproof compression sack", found this one for $20 new, and bought it. (I have since bought some of their waterproof ditty bags)

The bag is different is one key way, compressing the air out through the eVent takes time. I am scared to push it too fast so it takes me a couple minutes to compress it fully when it is loaded to the top. I have shorted this time by compressing my sleeping bag before putting it in.

It is water proof; i have soaked my pack to the point of submersion without a problem (for the sack not the rest of my pack).