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Thanks to the lightweight polyester material and a wide range of sizes, the Outdoor Research Ultralight Dry Sack is ideal for backpacking in rain-soaked climates. The smooth profile easily inserts into a backpack while the fully taped seams and polyurethane coating ensure you'll have a dry pair of clothes to change into when you arrive at camp.

  • 40D polyester is durable, ultralight, and highly packable
  • Polyurethane coating and fully taped seams provide complete waterproof protection
  • Waterproof roll-top closure keeps the wet out
  • Durable buckle on the closure is quick and reliable
  • Single D-ring provides a secure attachment point

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Outdoor Research Ultralight Dry Sack

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Here's what others have to say...

5 5

Great deal

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

I've used this bag a few times and it has held up well. I left it on the ground in a downpour and everything inside stayed completely dry. The bag is very light, so the exterior isn't as robust as a that of a heavier bag would be, but that's a sacrifice you make since this one is lightweight and not expensive. Great product.

Great to hear, Jackson. Thanks for taking the time to review!

OR Rep

5 5

Ultra-light is right!

  • Familiarity: I've used it several times

Over the years I seem to have accumulated a number of down garments stuffed in their own sack pocket or stuff sack.Keeping all these pieces together can get to be chore.An ultralight dry sack is the perfect ticket.

5 5

Great lightweight waterproof

  • Familiarity: I've put it through the wringer

Outdoor Research makes awesome dry bags and dry sacks. The stitching and seams are great. This particular model is lightweight and won't take a ton of abuse being tossed and drug. If you need a more durable bag or sack that will see the outside of your bags etc, get one of the non-ultralight sacks or even the "durable" dry bag or sac. I use this for ensuring my down bag stays dry in case of emergency.

Great lightweight waterproof
5 5

LIght and Dry

  • Familiarity: I've put it through the wringer

These dry sacks really are phenomenal. I use them as stuff sacks for my sleeping bag. The taped seems and waterproof fabric give me a little extra security on ski mountaineering trips while the taped seems and waterproof fabric allow me to compress the contents and seal it up as small as most compression sacs without all the extraneous straps and fabric of a traditional compression sack. It is definitely a piece that is a little fragile as most ultralight gear is but if used mostly within you pack it lasts and will remain unscathed!

3 5

Dry Sack

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

The Dry Sack kept our gear as dry as any dry bag I've had, but by the end of the week long trip on the Main Salmon there were little holes worn in it. I can't afford to buy a new bag every trip. My old bags have lasted 20 yrs or more.

This is the ultralight version. It works best with a bit of protection. I use this model inside my pack where it doesn't get a lot of abrasion etc. Due to it's low weight, I put my sleeping bag in this and put it at the bottom of my bag. I also own other Outdoor Research models including the "Durable Dry Sack" and some OR Dry Bags. They are more durable. the "Durable Dry Sack" has been tossed dragged and used outside of my pack. I keep my food in it and tie it in trees at nights... no holes, no wear and tear.