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The dry sack from the future.

The Sea-to-Summit eVAC Dry Bag uses waterproof and breathable eVENT fabric to keep your gear bone dry. It’s like a compression sack, but the design allows you to simply push excess air out the bottom eVENT panel as you roll down the top. No more compression straps, no more busted seams from reefing too hard on said straps. Oh, and get this: they’re oval, so they won’t roll off the deck and float down the river without you.

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Sea To Summit eVAC Dry Sack

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Here's what others have to say...

5 5

Nice and waterproof and compact

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

This kept my food and electronics dry in a couple wet slot canyons in Utah. The vent feature is great to keep things compact in your pack.

5 5

Awesome way to pack with weatherproofing

  • Familiarity: I've put it through the wringer

I have several different dry back but it is perfect way to purse the air and pack small while keep weatherproof is awesome.

Easy to purse the air out and has been great to take to Paddle Boarding in the ocean, river and lake

5 5


  • Familiarity: I've used it several times

My sleeping bag fits into here perfectly. The material seems sturdy and not too flimsy like many other dry sacks I've checked out. I'm using this currently and place my sleeping bag at the bottom of my pack. It is easy to roll down three times and snap closed. good product would get another if i needed

5 5

More better than good!

Now that I have upgraded my stuff sacks to lighter and better ones,
( my old stuff were Chiounards which were pretty hard to beat)
I have more confidence in keeping my essentials dry.

In hiking a canyon that may have deep pools...

In hiking a canyon that may have deep pools of water that require a swim, will this bag keep camera, binoculars, wallet, etc. dry?

Best Answer Responded on

Yes, it will. Any time I do a canyon, I always keep my extra valuable electronics in one additional waterproof layer--typically a ziplock or a bread bag. Dry sacks sometimes fail--they get caught on something, there's a small leak, I just feel better having one extra layer of safety there.

Hope that helps.

5 5

Nice and dry

  • Familiarity: I've put it through the wringer

I had originally gotten this bag for my sleeping bag but decided to upgrade to the compression version. I use this bag for my clothes and outer layers and it works great for that, You can get most of the air out and it has a little compression capability which is nice for packing in a pack. It keeps things dry so it is doing its job.

5 5

Dry sleeping bag!

I'm pretty sure this is my favorite stuff sack! I have the 13L size and I just keep my sleeping bag in it when I'm backpacking. I can attest to the fact that it is waterproof! This stuff sack lets you compress the contents of it by simply squeezing excess air out (and it's lighter than a normal compression sack). I've been using mine for a year and it still looks new!

2 5

Not durable

  • Familiarity: I've put it through the wringer

I have had this dry bag for 3 years now and this past year it started tearing in areas creating small holes. I was on a canoe trip and I threw it out of my tent. It hit a rock and the rock ripped straight through the fabric. For the rest of the trip I used a SealLine Baja bag and the material felt much tougher and worked better. I will definitely buy one for next summer.The buckle on that bag is also much tougher.

4 5

It's magic

  • Familiarity: I've used it several times

I'm not sure how this thing works, but I'm 95% sure it has to do with magic. I have the 20L bag and I can fit my down sleeping bag and big agnes sleeping pad inside of it pretty easily. I can compress it down, throw it in my bag, and keep everything dry, compressed, and organized. The only reason I didn't give it 5 stars is because I'm not in love with it yet.

Responded on

I think the love between you and this bag would blossom more quickly if you didn't compress it and just throw it in your back. My last few girlfriends indicated they didn't appreciate that behavior.

5 5


  • Familiarity: I've used it several times

I love these dry sacks. I like that you can put things in and even if you don't roll it perfectly and get all the air out, you can still get the air out so you can stuff it in those tiny areas in your pack. I use them for miscellaneous items, food, electronics, etc. I don't normally use this exact one for clothes or a sleeping bag. I use the compression event dry sacks for those, as i can compress those bulky items way down. Favorite dry sacks, will have a hard time every switching to standard ones again.

What size for a DSLR (Nikon with longish...

What size for a DSLR (Nikon with longish lens)?
Many thanks!

Responded on

I can fit a D3100 with an 18-55 in a 5L with plenty of room to spare, so you could probably manage with a 3L if you're just looking to put in a similar sized camera/lens combo. It is useful to pack the lens and body separately if you don't mind the extra lens and body cap, and also if you're not going to be taking it out every 10 minutes.

Responded on

I would recommend looking into S2S ultra sil dry bags. The eVac is a little more expensive because of the eVent material which for a camera you really don't need anyway. The ultra sil dry bags do just as good of a job and weigh less

3 5

Pretty rad

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

I just bought two of these to compress my down jackets and keep them dry in my packs for climbing, hiking, camping etc. They do their job well, however, it has very limited compression capabilities. Not because the process doesn't work (push air out, stuff gets smaller, piece of cake) however, as far as compressing garments, when you press down and try to roll the top its hard to roll it as far down as you want to because (at least in my case) the stuff inside gets caught in the roll. I've only done it like 5 or 6 times now, so maybe I just suck at it.

Responded on

I find doing a roll or two then shaking it a bit helps keep the stuff inside from getting caught in the roll. It just takes practice.

5 5

Great dry bag

This is the second evac dry sac I have purchased - they are awesome! I like that it is lightweight and compressible. It is a better alternative to non-compressible dry bags made of heavier material.

So I'm going on a 7 day survival trip next...

So I'm going on a 7 day survival trip next month, and it's been almost 10 years since I've gone camping so I'm getting all new gear. I've found a sleeping bag and mat that I'd take along, now I'm just looking into dry sacks that would be able to hold my belongings. The people I'm going with were reccomending using 2-3 dry sacks (1 for the sleeping bag, 1 for the sleeping mat, extra change of clothes, and other small things that can't get wet like camera etc.) What Litre bag should I look into getting?
If it helps I'm getting item #MHW1203 for sleeping bag and #CAS0504 for sleeping pad. Don't really want to have 1 HUGE dry sack to stuff everything into as it could be easier to consolidate everything into a few.

Best Answer Responded on

The stuff size for your sleeping bag of choice is 8 x 16 in. So, based on that, probably a 13L Dry Sack to stuff it in. I don't know that you need a waterproof sack for your sleeping pad, but if you do, check out the Granite Gear ToughSacks, item GRG0084. They have sacks specifically designed for sleeping pads: 11L Tall and 16L Tall. Hope this helps you out, and good luck.

What size bag will fit a Sierra Designs...

What size bag will fit a Sierra Designs Pyro 15 degree 600 down bag in long? Sierra Designs says stuff size is 18" x 8" so I got the 8L 17" x 8" x 5" bag which doesn't fit. I roll up the sleeping bag as usual but I can't get it through the opening of the dry bag, which measures about 10.5" (when flat) or about 8" in diameter if you hold the opening open in circle. So it's supposed to fit by Sierra Designs specs. So does anybody know what bag size will fit? Space is at a premium, so smaller is better, but without having to spend a lot of time trying to get the sleeping bag in. Thanks!

Best Answer Responded on

Don't roll up your bag. Just stuff it in. Then it'll fit. The actual stuff size of your bag is 15L, not 8. 18 (length) x 8 (diameter) works out to 15L. Also, get the S2S Ultra Sil Compression Sack, not the eVac, it'll work better for stuffing.

Responded on

Hey thanks James! I tried stuffing it in without rolling it up and it still won't fit. You're right, the dry bag is too small and doesn't have the volume to hold the bag. So it looks like I'll have to get the 20L now. I don't care for most compression sacks, because they try to squish the sleeping bag into more of a round shape. I like the traditional "roll" shape (long and narrow width), which fits better into my pack. Thanks again for your help!

5 5

This bag can save what would have been a miserable trip

I’ll preface this review with my cut and paste statement that I work as a backcountry backpacking guide in Yosemite National Park. Nearly all of the products I take the time to review have seen at least a half a season, if not more, of use... and I’m committed to not bothering to write a review until I feel like I’ve really gotten to know a product. I never thought I’d bother to write reviews, but I’ve recently decided that since I’ve spent so much time over these last many years reading reviews, and finding a tremendous amount of value in articulate and well-informed opinions, that I wanted to give back to the community. So, with that being said, here we go...

(If you don't want to read this next part just jump down to the last two paragraphs.) So, a quick story. I was reluctant to be converted to using down bags and jackets after having spent so much time living in the south. I had just moved back to California to work in the Sierras, and my mentor really tried to get it through my thick, caveman brain that down is the way to go in the Sierras, as its generally very dry. Well, needless to say, my mentor was right. I saved some weight and space in my pack, which I really appreciated.

However, this little paranoid voice kept whispering in my ear, 'What if you take a dive during a creek crossing? What if something happens?' So, to indulge my fear I bought a couple of these for my down bags. Sure, I could use a trash bag, but these make great watertight compression sacks for down bags... keeping it dry and packed down tight.

Well, my last trip of last season, was in the middle of September. Summer's drawn to a close, and the weather is a little less predictable in Yosemite by this time. Sure enough, it rained almost the entire trip. We had people ready for rain... pack covers on, jackets and bags wrapped in trash bags, etc. Well, we arrive at camp on day three. It had been pouring for over five hours, so it wasn't a huge surprise to find some folks with damp sleeping bags once we got to camp and unpacked. Luckily, the rain had stopped, so we made a fire and got some things dried a bit... dry enough that the night wasn't too miserable.

Well, my fellow guide (who was leading the trip) and I had been so busy getting things settled that it wasn't till after dinner that I was able to empty my pack and get my tent up. Well, my pack was soaked. My pack cover had done little in the way of keeping the torrent out. However, in the pool in the bottom of my pack was this faithful dry sack, with my perfectly dry, crisp Western Mountaineering bag just waiting for me. I felt like I was unpacking Claire Forlani to curl up with that evening. That dry bag was the most welcome sight I had seen in a while. And what had provided me such a warm, fuzzy, pleasant night...? A $20 dry sack.

Would you pay $20 to not have to sleep in a wet bag? This may sound funny, and it could have been... but such a situation can be potentially life-threatening. I will never pack a down bag in anything but one of these dry sacks. Ever.

Now, with that story out of the way... I will also add that these bags are incredibly durable. I've beaten the hell out of mine and the stitching, seams, fabric, roll-top all look brand new. And, keep in mind, that's with me placing this dry sac on some nice abrasive granite and mashing my sleeping bag into it like the Samsonite gorilla. I suspect I could make one of these last a decade with some care.

So, in short... is it worth approximately $20 to $40 to you to have something as important as your sleeping bag, clothing, jacket, or food stay perfectly dry despite an accident or adverse conditions? Mmmhmm... thought so.

5 5

Bear bag = dry food

Use this as my food/bear bag. Keeps my food dry whether it's in my pack hiking in the rain, or hanging away from da bears. The actual bears!