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Kelty’s got your back during your next chilly night in the backcountry. With the Sine 20° DriDown™ Sleeping Bag, you get the best of both worlds of comfort and light on weight. The Arc Zipper System is there to provide a natural arm motion when opening the bag and for dual venting. The water-resistant 800 fill DriDown™ stays drier, lofts better, and dries faster. On warmer nights, leave unzipped and use like a blanket. 


  • 800 fill power DriDown™
  • Arc Zipper System
  • Built-in pillow pocket
  • Thermal-comfort hood
  • Natural fit toebox
  • Zipper draft tube with anti-snag design
  • Draft Collar
  • Mesh storage sack included
  • Stuff sack included


Temp Rating: 20° / -7°C

EN Comfort Limit Rating: 19° F / -7° C

Size Regular:
  • Fits to: 6 ft / 183 cm                                   
  • Fill weight: 14.6 oz / .414 kg
  • Total weight: 2 lbs 5 oz / 1.041 kg
  • Stuffed size: 8 x 14 in / 20 x 36 cm

Size Long:
  • Fits to: 6 ft 6 in / 198 cm
  • Fill weight: 17 oz / .483 kg
  • Total weight: 2 lbs 9 oz / 1.157 kg
  • Stuffed size: 8 x 14 in / 20 x 36 cm


800 fill power DriDown™

Shell material:
20D Nylon Ripstop

Liner material:
20D Nylon Taffeta
New Badge: Yes
Gender: Unisex
Insulation: DriDown
Temperature Rating: 20 Degree
Mountain Sports:
    • Kelty Sine DriDown Sleeping Bag

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    Product Reviews


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    1. Very soft! Great foot zipper!

      This bag is soft and cozy. It packs down without much effort and lofts again very quickly. The natural arc zipper doesn't make much difference to me as I sleep in a somewhat confining bivy. However, I have really enjoyed pulling my feet out and on top of the bag with the lower zipper when the night gets too warm. The bag has never gotten wet on the inside despite moisture and condensation, and the outside dries off extremely fast when draped over a bush in the sun. The compression sack that comes with the bag is perfect.

      Suggestions for Kelty: I would have preferred a right hand zipper, a waterproof toebox, and added inches to the shoulder and hip girth.
      on Apr 19th 2017

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