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Ultra-Sil Nano Dry Sack

Backpack organization for gram counters

$12.95 – $34.95

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

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.

$12.95

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Description

Designed with ultralight backpacking in mind the Ultra-Sil™ Nano™ Dry Sack is made from lightweight  15D siliconized Nylon. With the use of featherweight 15D fabric, these are perfect for use inside your pack to keep gear organized and dry. Using a hypalon roll-top closure that doesn't wick moisture, an oval base for easy packing, these are fully seam sealed for water resistance. Ideal for backpacking, climbing, cycle touring and modular packing where lightweight and low bulk is key. 

Read more about which dry bag is right for you HERE

Highlights

Durability

Keep it inside your pack and away from hard edges and corners

Waterproofness

Should be kept in another dry bag or backpack

Best Use

Backpacking, Travel, Bike Packing

What this bag could hold

1 liter: snacks, wallet
2 liter: first aid essentials (avoid hard or sharp objects), gloves/beanie hats, or some snacks

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

Features

  • Ultra-Sil Nano 15D Nylon fabric for high strength to weight performance
  • Ultra-Sil Nano has a 1,200mm hydrostatic head
  • Waterproof hypalon roll-top closure does not wick moisture
  • Waterproof seams - double stitched and tape sealed
  • Reinforced stitching on all stress points
  • Siliconized fabric with a smooth finish for easy packing
  • Compact and super lightweight with an oval base design for easy packing
  • This product is not intended for boating or marine use
  • Intended for use inside a bag or backpack