Ultra-Sil Duffle Bag

Packs down to the size of a tennis ball

$44.95

40 liter40 liter
GreyGrey
Royal BlueRoyal Blue
OrangeOrange
Pacific BluePacific Blue

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.

Other ways to purchase

No Online Retailers Stocking Current Selection

Description

The Ultra-Sil™ Duffle Bag is the ultimate in lightweight packable duffle bags. With an incredible 40L capacity and strong enough for a heavy load, it is the perfect bag for airline carry-on, impromptu excursions, weekends away or just going to the gym. Super compact and super light, it is an obvious choice as a spare bag on any trip.

Features

  • 40 Liter / 2420 cu. in volume capacity and strong enough to carry a heavy load
  • Ultra-Sil fabric for packability, strength, and durability
  • Durable water-resistant zipper
  • Bar tacked, reinforced stitching at key stress points
  • Fits snugly in the accompanying stuff sack with a carabiner key ring attachment