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Sea to Summit Duffle Bag

Made to go anywhere and survive anything

$129.95 – $199.95

Sleeping Bag Temperature Ratings Explained

The EN Rating scale is a scientific test to determine the warmth of a sleeping bag. The test produces a Lower rating (for male sleepers) and a Comfort rating (for female sleepers). Both are listed in the features table on the product page.

A unisex sleeping bag with a Lower limit of 14ºF means a man should be comfortable down to air temperatures of 14ºF. The same bag will also have a Comfort limit, in the realm of 27°F, so a woman would be comfortable down to an air temperature of 27ºF. These ratings require 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.

A variety of factors impact sleeping bag warmth - the above temperatures are merely guidelines, not guarantees. It’s important to think of a sleeping bag, an appropriately insulating sleeping pad and a liner as a sleep system. For example - 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, plus a sleeping mat with an R-Value of 2.5 to 3, and consider a Reactor thermal liner.



Sea to Summit Duffles set new benchmarks for functionality, ease of use and quality construction. These rugged load-haulers are ideal for rough and tough expeditions, overlanding adventures, and surviving the urban jungle. The carry straps can quickly and easily be changed from hand grip mode to backpack mode to single shoulder strap mode, just by unclipping the custom steel gated hooks. Stow the straps while traveling to prevent damage from baggage handlers.

It’s easy to pack your duffle, too. The padded lid opens 40% wider than other expedition duffels and the tall shape swallows bulky gear items. The double teeth of the burly #10 zipper resist theft (unlike single-toothed zippers which can be opened with a stylus, even if they are locked).

All stress points – handles, lash points, compression straps – are integrated into a 360° ‘yoke’.

More at about packing your bags HERE

Is the duffle?

  • Carry-on sized? Only the 45 Liter version. The 65L, 90L and 130L will need to be checked

  • Waterproof? Laminate is waterproof, but seams aren't taped & zipper would admit water. Light rain=not an issue. Monsoon=wet contents.

  • Packable? You can fold a Duffle, but the stiff laminate means that it is still a little bulky. For a packable travel bag, check out the Pack Converter Duffle


  • Padded lid opens 40% wider than conventional expedition duffels
  • A taller shape makes packing and unpacking easier
  • Carry straps unclip and re-clip in seconds to provide different carry modes or to be stowed out of harm’s way
  • Super-tough materials: waterproof tarpaulin laminate, base made of 1000D nylon, steel gated hooks
  • Large, zippered internal pocket for organization
  • Compression straps with Field Repair Buckles
  • Lash points for attachment to vehicles or pack animals
  • Magnets in carry straps keep them perfectly positioned in Classic hand grip mode

Tech Specs

Product Details

Best Use
Trekking, travel, hauling outdoor gear
Tarpaulin Laminte, 1000D nylon, custom steel gated hooks
1 internal zippered pocket
Magnets in carrying straps keep them perfectly positioned
Laminate is waterproof, but seams are not sealed. Zippers are also not watertight
Carry on size
11.4 x 23 x 11.4in / 29 x 58 x 29cm
3 lbs 3 oz / 1.45kg
Long Weekend
13 x 26 x 13in / 33 x 66 x 33cm
3.8 lbs / 1.75kg
Clothes & Gear
15 x 29 x 15in / 38 x 74 x 38cm
4.5 lbs / 2.05 kg
Bring Everything
17 x 33 x 17in / 43 x 84 x 43cm
5.4 lbs / 2.45 kg


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