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Adults' L.L.Bean Ultralight Sleeping Bag, 20° Mummy

Item #: TK504193
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Adults' L.L.Bean Ultralight Sleeping Bag, 20° MummyAdults' L.L.Bean Ultralight Sleeping Bag, 20° Mummy
Adults' L.L.Bean Ultralight Sleeping Bag, 20° Mummy

was $229.00now $169.00Save 26%

Sale Color$169.00:Save $60.00 (26% Off)Rustic Red/Carbon Navy
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Product Details

Our popular ultralight sleeping bag now features Primaloft Gold with Cross-Core, a mid-loft ultralight insulation that retains much of its insulating ability even when compressed. It's an incredibly light, compressible and comfortable sleeping bag.

Size & Fit

  • Regular fits users up to 6'; Long fits users up to 6'6".



  • Weight: 1 lb. 15 oz.
  • Packed size: 14" x 6.5".


  • Weight: 2 lb. 1 oz.
  • Packed size: 14" x 6.5".

The Technology

This is the only sleeping bag in the world to feature Cross-Core, an industry-changing innovation that fuses NASA-developed aerogel technology with existing PrimaLoft Gold insulation, for more warmth without adding an ounce of weight. Sean McCoy, Managing Editor of GearJunkie.com had this to say: “Why is this a big deal? Well, aerogel is the lightest insulator on Earth.” It allows us to build a roomy, comfortable rectangular bag that's more than light enough to take backpacking.


This exclusive combination of NASA-developed aerogel technology and performance insulation is 15% warmer without any extra weight.

  • Wash and dry in large commercial machine.


  • Shell and lining made from soft, durable 20-denier ripstop nylon.
  • 100-gram Primaloft Gold insulation with Cross-Core technology.
  • This insulation has more warmth and compressibility than traditional synthetics without the bulk.

Additional Features

  • Roomy shape allows plenty of shoulder room.
  • Small inside pocket on shoulder for headlamp, glasses or other essentials.
  • Half-length zipper allows convenient venting.
  • Trapezoidal footbox provides extra room for feet or extra layers.
  • Compression stuff sack and oversized cotton storage bag included.
  • Unless otherwise specified, regular mummy sleeping bags come with right-handed zippers.
  • Long mummy bags come with left-handed zippers.
  • Temperature rating tested in to EN 13537 standards.
  • Imported.
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