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REI Lumen +40 Sleeping Bag

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The warm-weather REI Lumen +40°F synthetic sleeping bag features amazing compressibility and warmth and balances price and performance.

  • Synthetic Thermawave polyester insulation is durable and highly compressible; synthetic polyester fill retains some insulating properties even when wet
  • Shingle construction with overlapping layers distributes insulation evenly and keeps it from moving around so there are no cold spots
  • Equally distributed insulation accommodates the multiposition sleeper; mummy shape is thermally efficient, yet roomy enough to ensure sleeping comfort
  • REI Lumen +40°F sleeping bag has a relaxed fit through the shoulders and hips, giving you room to move for a better night's rest
  • Ripstop nylon shell fabric has a nice hand feel, and is lightweight, durable, water- and abrasion resistant; nylon taffeta lining is soft and tear-resistant
  • Shell fabric is treated with a Durable Water Repellent finish to repel moisture and stains
  • Contoured hood, insulated full-face muffler and full-length zipper draft tube with ground-level seams work together to keep heat in and cold out
  • REI Lumen +40°F has an external chest pocket to keep small essentials—headlamp, watch, glasses—right at hand and easy to find in the dark
  • Special pocket in hood can be stuffed with clothing layers to make a pillow that stays in place; no need for a pillow to take up valuable space in your backpack
  • Pad loops provide attachment points to keep your sleeping bag and pad together to avoid rolling off onto the cold ground (straps and sleeping pad sold separately)
  • Full length zipper is backed by wide, antisnag binding tape
  • Any REI backpacking bag can be zipped to any other REI backpacking bag because of the consistent 63 in., No. 5, YKK zipper; women's bags zip on the right, men's on the left
  • Differentiated drawcords (1 round, 1 flat) allow quick identification, even in the dark, so neck and hood adjustments are a cinch
  • Nylon stuff sack and cotton storage bag included
  • Tested by an independent third-party lab using European Norm protocol, the EN temperature ratings allow direct comparisons across brands with other EN-rated bags

Imported.

Item 809128

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REI Lumen +40 Sleeping Bag Specs
Specification
Description
Best use
Backpacking
36 degrees Fahrenheit
46 degrees Fahrenheit
36 degrees Fahrenheit
2 degrees Celsius
2 lbs. 3 oz. / 2 lbs. 1 oz.
1.0 / 0.9 kilograms
Ripstop nylon
Synthetic
Polyester fibers
17 / 15 ounces
Nylon taffeta
Mummy
78 / 72 inches
62 inches
58 inches
7.5 x 15 inches
11 liter
Men's
EN lower limit (rating for men)
EN comfort (rating for women)
Temperature rating (F)
Temperature rating (C)
Weight
Weight - metric
Shell
Insulation type
Fill
Fill weight
Lining
Sleeping bag shape
Fits up to (in.)
Shoulder girth (in.)
Hip girth (in.)
Stuff sack size
Stuff sack volume
Gender

REI Lumen +40 Sleeping Bag

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