Big Agnes Sidewinder SL 20° Sleeping Bag product image
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Big Agnes Sidewinder SL 20° Sleeping Bag product image
Big Agnes Sidewinder SL 20° Sleeping Bag product image

Big Agnes Sidewinder SL 20° Sleeping Bag


Low in stock - order soon!

Color: Legion Blue/Tapestry
Bag Size: Long
  • Designed for side sleepers
  • 650 fill DownTek insulation with water repellent chemistry
  • Cinching insulated tube to seal out drafts
Delivery & Pickup Options

Ship To Me

Store Pickup

Product Information

Temp Rating

15 to 30 Degrees

Insulation Type



  • Bag weight: 2 lb. 8 oz. / 1.13 kg
  • Fill weight: 21 oz. / 604 g
  • Compressed bag size: 7.5 x 8 in. / 19 x 20 cm
  • Stuff sack size: 8 x 17.5 in. / 20 x 45 cm
  • Sleeve (in.): Top: 65 / Middle: 59 / Bottom: 40
  • Bag size: Fits up to 6 ft. 6 in. / 198 cm
  • Works with any pad size or style
  • Shell: nylon ripstop featuring a PFC-free water repellent finish
  • Lining: polyester taffeta featuring a PFC-free water repellent finish


  • Hang dry or store bags with exterior loops
  • Storage sack and stuff sack included


  • Traditional mummy bag designed for side sleepers
  • Patterned to move with you as you roll from one side to the other
  • Close fitting, jacket-style hood keeps insulation close to the body without sacrificing mobility
  • Keep pillow in place with unique Pillow Barn made of stretch mesh material with interior access from either side for easy adjustment
  • Optimized warmth and minimized pressure points with body mapped insulation
  • Primary Fill: 650 fill DownTek™ repels water while maintaining insulating value – bluesign® Certified PFC free water repellent chemistry
  • Body Mapped Fill: FireLine™ ECO Synthetic Insulation, 100% post-consumer recycled polyester, featuring low-denier fibers that are tightly woven and provide high loft, compressibility, high weight-to-warmth ratio, and durability
  • Optimized fit and thermally efficient footbox is patterned to mimic the shape of your foot position while lying on your side
  • Smooth, quick zip with anti-snag locking zipper with no-draft zipper garage, and long, ambidextrous zipper
  • Easily adjust hood without unzipping using low-profile internal cordlock access
  • Seal out drafts by cinching insulated tube along upper hood opening
  • Country of Origin : Imported
  • Brand : Big Agnes
  • SKU: 22365474

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