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Ultra-Sil Day Pack

Packs down to the size of a tennis ball

$32.95

20 liter20 liter
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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 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 while a woman would be comfortable down to the air temperature of 30ºF, the comfort limit. Men and women should always sleep in a layer of long underwear and use a sleeping mat.


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


There’s a huge variety of factors that can impact sleeping bag warmth, so these ratings are not guarantees. We always recommend choosing a bag that is a few degrees colder than you plan on going out in (choosing a 23ºF bag for 27ºF nights). If you have any questions about which temperature you should select, or how to improve your warmth in a sleep system, reach out to us on our contact page any time.

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Description

The Ultra-Sil™ Day Pack won the Backpacker Editors' Choice Gold Award in 2017, meaning this little pack has stood the test of time and sustained its best-in-class status for more than 5 years. It is perfect for a summit pack, carrying groceries when on foot, on a bike or as an extra traveling tote. The tiny packed size of this perennial best seller fits easily onto your key ring, in a jacket pocket or a purse and the reinforced bar-tacks at all stress points enable it to withstand loads 250 times its own weight. A small but mighty essential.

Features

  • The Ultra-Sil Day Pack won the Backpacker Editors’ Choice Gold award, 2017
  • Packs down small so it easily fits in pockets, purses or luggage
  • Stuff sack has an attached carabiner
  • Simple, streamlined design so it's light and low profile
  • Siliconized CORDURA® fabric for strength and durability
  • Bartack reinforced stitching on all stress points
  • Two-way zipper closure
  • Reinforced shoulder straps for increased carrying comfort
  • Webbing daisy-chain attachment point can hold a bike light