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Ultra-Sil Dry Sack

Pack organization and water resistance all in one

$11.95 – $32.95

1 liter1 liter
2 liter2 liter
4 liter4 liter
8 liter8 liter
13 liter13 liter
20 liter20 liter
35 liter35 liter
GreyGrey
OrangeOrange
Pacific BluePacific Blue
LimeLime

Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. Unisex sleeping bags list the Lower Limit which is the lowest temperature rating that an average male sleeper would be comfortable in. Our women’s sleeping bags list the Comfort Limit, which is the lowest temperature rating at which an average female sleeper should be comfortable. The comfort and lower limit temperature ratings are listed in the features table on the product page.

For example, a unisex sleeping bag that shows a Lower limit of 23ºF means a man should be comfortable down to air temperatures of 23ºF. The same bag will also have a Comfort limit, in the realm of 32°F, so a woman would be comfortable down to an air temperature of 32ºF. Men and women should always sleep in a layer of long underwear and use a sleeping mat with an R-Value appropriate for expected ground temperatures – without this, the sleeping bag itself is unlikely to keep the sleeper warm enough.


Here’s a basic categorization of appropriate use, based on rated temperatures:
Summer:   >+35ºF / +3°C
3-Season:   +10 to +35ºF / -15° to 0°C
Winter:   <10ºF / -15°C


A huge variety of factors can impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag as one element in a sleep system which also includes an appropriately insulating sleeping pad and a liner. For instance - if you plan on sleeping in nighttime air temperatures of 27ºF / -3°C, choose a bag with a gender-appropriate rating of 23°F / -5°C nights, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner. If you have any questions about which temperature sleeping bag / R-Value sleeping mat you should select, or how to improve your warmth in a sleep system, reach out to us via our contact page any time.

$11.95

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Description

The Ultra-Sil™ Dry Sack won the sought after Backpacker Editors' Choice award in 2006 and is still the ideal dry sack available for backpacking. Made with lightweight, waterproof 30D Ultra-Sil™ CORDURA® brand fabric it's the perfect choice for modular packing to organize your gear inside your backpack like a pro. With an almost translucent look, visibility of contents is easy, and if you're really organized you'll make use of multiple color options to find things easier. Other features include a non-wicking hypalon roll-top closure, a round base for ease of packing and fully seam sealed for water resistance. An excellent choice for lightweight backpacking, cycle touring and travel.

Read more about which dry bag is right for you HERE

Highlights

Durability

Perfectly adequate durability for use inside a backpack. Avoid hard edges and corners and sharp or abrasive external objects

Waterproofness

Greater than 2000mm hydrostatic head – more than sufficient water protection for use inside a pack

Best Use

Backpacking, Hiking, Bike Packing & Travel

What this bag could hold

1 liter: a phone (in a waterproof case - double bagging essential), snacks & wallet
2 liter: some snacks, first aid essentials, gloves or beanie

4 liter: shell jacket or gloves / beanie, day-hiking essentials
8 liter: a two-season or a high-end three-season down sleeping bag, dry clothes for a backpacking trip
13 liter: all your clothes for a backpacking trip or a mid-range three season sleeping bag
20 liter: a three-season synthetic sleeping bag plus a Reactor Liner
35 liter: use as a full pack liner for overnight (30+ Liter) packs

Features

  • The Ultra-Sil Dry Sack won the Backpacker Editors’ Choice award, 2006
  • 30D siliconized high-tenacity CORDURA Nylon fabric for extra strength, durability and a smooth finish for easy packing
  • Ultra-Sil fabric has a 2,000mm hydrostatic head
  • Waterproof hypalon roll-top closure does not wick moisture
  • Waterproof seams - double stitched and tape sealed
  • Reinforced stitching for greater seam strength on all stress points
  • Super compact and ultra lightweight
  • This product is not intended for boating or marine use
  • As of 2018: Features the patent-pending 5/8in | 15mm Field Repair Buckle with stainless steel pins