Alpinetrek expert Hannes
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Mountain Equipment - Lightline SL - Down sleeping bag

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Attributes & features
Suitable for:
Design:
Down sleeping bag
Recommended use:
Mountaineering; Mountaineering; Winter touring
Outer material:
Driliteloft SL(100% Polyamide)
Inner material:
Supersoft 20 (100% polyamide)
Fill:
650 g duck down 725 cuin bulking power 90/10 ratio down/feather
Comfort rating:
- 6 °C
Lower limit rating:
- 13 °C
Extreme rating:
- 32 °C
Packed dimensions:
19x31 cm (regular); 19x33(X-large)
Weight:
1225g (regular)
Lengths:
Max. height: 185 cm (regular); 200 cm (X-large)
Extras:
Trapezoid chamber construction; EXL system; Draft collar; Anatomical hood; Foot section with Shark Toe and 4 baffle Bulls Eye
Item No.:
513-0294
Product description
Mountain Equipment starting making down sleeping bags in the early sixties when the sport of alpine climbing was still in its infancy. Since that time, it has stuck to what works while developing new technologies to perfect the art of making quality down bags that perform in the most demanding conditions. The Lightline SL 5 Degree Down Sleeping Bag incorporates both time-proven technologies and modern innovations with minimum weight penalty, making it ideal for technical alpine climbs when ultralight is needed and a comfortable night's sleep is crucial to success.

Since a comfortable night's sleep is key to recovery, Mountain Equipment developed a complex baffle system to minimize cold spots and optimize warmth while you sleep. Trapezoidal 2:1 ratio baffles are designed to stabilize the down while maximizing loft and increasing the areas of overlap between seams to eliminate cold spots. The hood of the bag incorporates eight zoned baffles to reduce the chance of down migration, while the anatomical fit helps to eliminate heat loss from the top of the bag. The Lightline also features the Gemini integrated draft collar for even more heat retention, as well as baffles behind the 3/4-length side zip to reduce draft. The foot of the bag utilizes a four-baffle constriction designed to minimize weight while limiting down migration. 
The Mountain fit is a semi-tapered mummy shape the blends both thermal efficiency with some wiggle room for comfort. Incorporating its EXL technology into the fit of the bag, the technology incorporates elasticated stitching within the lining, allowing the fabric to stretch for as much loft as possible; studies suggest this technology accounts for an added two degrees of warmth with no added weight. The ground-level side seams are placed lower towards the ground, so the upper baffles actually wrap around the side of the body allowing for a greater area of the bag to be unaffected by cold from the ground. The Drilite Loft II fabric is water-resistant, tear-resistant, and is located along the outside of the bag, as well as the foot and hood lining. Supersoft 20 lining runs throughout the body of the bag for increased breathability, and as a result, more comfort. The bag comes with a roll-top waterproof compression sack, as well as a mesh storage sack. The European Standard comfort rates the bag to 21 degrees Fahrenheit with a lower limit of 9 degrees where you will still maintain a relatively comfortable night's sleep.

  • 21F EN comfort rating
  • 9F EN lower limit rating
  • 93/7 850-goose down fill
  • Mountain fit (semi-tapered mummy profile)
  • DriLite Loft II water-repellent fabric
  • Supersoft 20 lining
  • EXL top lining
  • DC8 8-baffle hood with anatomic fit
  • Gemini integrated collar with down draft tubes
  • 3/4-length side zip with anti-snag baffle
  • Ground level seams
  • 50g box baffle walls
  • Trapezoid baffles
  • Roll-top waterproof compression sack and mesh storage sack included
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Alpinetrek expert Christian

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