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Kelty’s got your back during your next chilly night in the backcountry. With the Women’s 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. Part of the Built for Women collection, this Sine sleeping bag has added down for added warmth. On warmer nights, leave unzipped and use like a blanket. No more bags under the eyes while using the Kelty Built Sine Sleeping Bag on your next adventure!  


  • 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 Rating: 27° F / -3° C

Fits to: 5 ft 8 in / 172 cm

Fill weight: 18.6 oz / .528 kg

Total weight: 2 lbs 8 oz / 1.125 kg

Stuffed size: 8.5 x 14 in / 22 x 36 cm


800 fill power DriDown™

Shell material:
20D Nylon Ripstop

Liner material:
20D Nylon Taffeta

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Gender: Women's
Insulation: DriDown
Temperature Rating: 20 Degree
Mountain Sports:
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  • Specifications

  • Kelty Sine 20 Women's Sleeping Bag

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Product ReviewsWe Love to Hear your Feedback


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  1. I Like This Bag Just Fine

    I've used this bag in a lot of conditions. With a sleeping bag liner and some serious layering it was warm enough when the temps were in the high teens at night. I like the zipper system, the collar, and the hood. Sometimes I miss being able to fully unzip my sleeping bag. I find the foot box hard to unzip once I'm snuggled into the bag- it doesn't have an inside zipper. Also, at 5'2" I wish it was a little shorter, I tend to have cold air in the foot box. I like that it comes with a mesh bag and a compression sack. It squishes down impressively small. It is also pretty light. I've never regretted this purchase. on Jun 24th 2018

  2. Dries fast, but not as warm as I hoped

    I am a backpacking and sea kayaking guide in southeast Alaska so I am subjected to cold and wet weather. This bag was great in a bivvy not to soak up condensation. The coldest it got was 30F degrees and I was pretty cold in this bag. Above 35F this bag is very comfortable though. on May 11th 2018


    I love this sleeping bag! It is great quality, light weight, and extra cozy. It comes with two bags (one a compression sack). on May 7th 2018

  4. Simply Awesome

    I haven't actually used this bag yet, I got it yesterday, but I'm really excited about it. I love the design. The colors are fun and materials are soft. I was unsure about the odd two zipper concept, but it actually makes it really comfortable. The shape of the hood makes it actually stay on my head and the pocket to make a pillow is perfect! The women's specific design actually makes sense for my size (I'm short) and doesn't leave tons of extra space. The bag is light weight but warm and packs down really small. I love that it comes with a mesh stuff bag and a compression sack. I can't wait to hit the trail and give this thing a test in the elements! on Mar 16th 2017

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Women's Sine 20

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