Outdoor Research Hydroseal DryComp Sack


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Head into wet, rugged environments with this durable, waterproof compression sack. Hydroseal-200® coated Antron nylon fabric is fully seam taped for totally waterproof protection. The internal drawcord closure cinches around your load and four straps compress it all down. A sturdy buckle secures the roll top closure, providing waterproof protection. An internal zippered pocket holds keys, a headlamp, or other small items and can be used to store the entire sack. A webbing handle and an external daisy chain allow this sack to attach to any pack.


  • #1- 27 1/2" X 7", 1058 cu.in.
  • #2- 30" X 8", 1508 cu .in.
  • #3- 32 1/2" X 9", 2068 cu.in.
  • #4- 35" X 10", 2749 cu.in.
  • #5- 37 1/2" X 11", 3564 cu.in.

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Review Summary

4.8 out of 5

16 Reviews

16 Ratings & Reviews

Nice find!
February 27, 2007

Have two small and large use them to stow gear for two Honda aquatrax wet bikes-great bags. Was surprised as they looked small all stuffed in their case (would probably fit in your back pocket) but they expand out nicely and keep everything totally dry. Wish I had a reason to buy the other sizes.

Rhonda Staffords opinion of Hydroseal Dry Comp Sack
May 22, 2006

I have two of them, one very small and then the next one size up. They are fantastic and I am totally satisfied with them. They keep everything absolutely dry even in the wettest conditions. Who wants to sleep with a wet sleeping bag and wet pillow after kayaking 20 miles in one day!

Great design and sturdy
February 01, 2009

I ordered 3 of these stuff sacks and must say they are extremely well designed, well fabricated and sturdy. I ended up returning them because they were way too large for backpacking. I think these would be great for kayaking or canoeing. I ended up going with the Sea-to-Summit eVent compression sack for backpacking.

Stood Up to the Stress Test
May 08, 2009

Was really impressed with the bag when I received it. Put it to the ultimate test by submerging it in water -- everything inside remained bone dry. Great bag.

Very useful bag
July 18, 2009

I bought the #3 size bag not sure whether it would be large enough to pack 7 days worth of clothes. It compresses extremely well and gave me extra space inside my pack for additional gear. The weather was perfect during our venture so we didn't get to see how well it keeps our things dry; but, I'm sure it will perform to the specs just looking at how well the bag is made.

Good stuff
June 28, 2009

Perfect for life in the GreatNorWet. From the kayak to the pack - my down bag floats high and dry in this bag.

Awsome Dry Bag
May 22, 2007

Used it to hold my blanket & pillows for an over night canoe trip. I wound up flipping my canoe, & still slept with a dry blanket & pillows.

Love Them!
December 06, 2007

I'm in the army and sometimes packing is a pain. bought size 4 and 5 and they are awesome. kept my stuff dry and they r sturdy. told my buddies bout these great bags

Great bag!
July 18, 2006

This was the largest bag we could find anywhere. It held all our stuff and kept everything dry. Highly recommend!

excellent dry bag
March 28, 2009

I bought a few of these for Kayaking. I strap them to the decking and have not had any problems. Very good seal, kept everything dry. Love the fact they pack down into inside pocket.

Useful bag
June 03, 2009

very nice bag, keeps equipment dry. I bought the #3 size which is plenty large enough for my mid-weight sleeping bag and a fleece, or my 2 person tent. Compresses well, provided you allow for air to escape. The inner pocket is great for keeping small electronic devices safe, and doubles as a pack for the sack. Very nice!

Great Addition to Pack
May 19, 2009

I used the #3 bag this past weekend in the Appalachians on a three day hike, rained the entire time. I had clean/dry cloths to sleep in at the end of the day. The daisy chains are a great addition that I used for additional equipment.

Great Dry Bag
August 17, 2009

I have no complaints. It is what it says it is... a great bag for stuffing anything you need to keep dry. Great for whitewater or for simply keeping your sleeping bag and a spare set of clothes dry.

Exceeded expectations
March 26, 2008

I originally bought one bag to make sure it was going to take the stress of actually using it as intended. I am impressed, and intend to buy more.

Great for Kayaking
July 04, 2009

Due to it's slim format the pack is perfect for storing it in the small compartments of a kayak.It is definetely waterproof. I like that a storage bag is included in which the sack itself can be folded into. Only remark is that the air is a little difficult to get out when the sack is closed. If this is important to you the other OR bag with a valve would be better.

Nice design but too small for what I intended to use it for
May 02, 2009

The design is great but I needed something bigger. I like the two separate compartments. So I am ordering the larger size.

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Outdoor Research Hydroseal DryComp Sack Photo


Available sizes, while supplies last, include size and size 1: 1, .

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