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Electrum Synthetic Sleeping Bag (-1 degC) by Marmot - Adventure Outlet - New Zealand
Electrum Synthetic Sleeping Bag (-1 degC) by Marmot - Adventure Outlet - New Zealand

Electrum Synthetic Sleeping Bag (-1 degC) by Marmot

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The best of both worlds, this 3-season sleeping bag combines synthetic and down insulation with body-mapped construction to maximize the value of both insulations and keep you warm down to 30°F.


  • Synthetic SpiraFil on the ground level and water-resistant, 650-fill-power down on top deliver excellent warmth, even in damp, cold conditions
  • Body-mapped insulation yields maximum thermal efficiency by increasing insulation around the parts of the body that need it most
  • Hard-wearing outer shell has ripstop nylon on top and polyester on bottom
  • 3D hood construction provides an ergonomic fit for greater warmth, face muff adds comfort by keeping zippers, drawstrings and hook-and-loop closures away from face
  • Full-length zipper is backed with a snagless, insulated draft tube

Technical specs

Best Use


Tested Lower Limit

27 degrees (F) - EN

Tested Comfort


Temperature Rating (F)

30 degrees (F)

Temperature Rating (C)

-1 degrees (C)


Long - Left Zip: 2 lbs. 13 oz.

Regular - Left Zip: 2 lbs. 8 oz.


Top shell: 30-denier ripstop nylon; bottom shell: 70-dnier polyester

Zipper Location


Insulation Type

Down, Synthetic

Water-Resistant Down



650-fill down / SpiraFil synthetic fibers

Fill Weight

Long - Left Zip: Down: 9; synthetic: 18.5 ounces

Regular - Left Zip: Down: 7.8; synthetic: 17 ounces


30-denier nylon

Sleeping Bag Shape


Fits Up To (in.)

Long - Left Zip: 78 inches

Regular - Left Zip: 72 inches

Shoulder Girth (in.)

Long - Left Zip: 63 inches

Regular - Left Zip: 61 inches

Hip Girth (in.)

Long - Left Zip: 60 inches

Regular - Left Zip: 58 inches

Stuff Sack Size

8.5 x 18 inches

Stuff Sack Volume

16.8 liters

Compressed Volume

Long - Left Zip: 8.4 liters

Regular - Left Zip: 8.3 liters