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Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample
  • Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample
  • Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample
  • Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample
Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample

Big Agnes

Women's Sidewinder SL 20 (-7C) Sleeping Bag Regular - Sample

$229.99 $349.95
Shipping calculated at checkout.

Sleep sideways. Wake happy.

The Women’s Sidewinder SL 20° is built for side-sleepers who want full comfort without sacrificing performance. With a contoured female-specific fit and body-mapped insulation in high pressure zones, it lets you roll from side to side without drafty gaps or cold spots. The hybrid insulation—water-resistant DownTek™ down plus FireLine™ ECO synthetic fill—gives you lofty warmth where you need it, plus extra cushioning in the hips and feet. Thoughtful touches like a jacket-style hood, stretch “Pillow Barn” to hold your pillow in place, and a center zipper that won’t get in the way make nights more comfortable. Lightweight, water-repellent, and designed to fit women precisely, this bag turns side-sleeping in cold weather into something you actually look forward to.

*This is a vendor sample. Like new. Never used*

Quick Specs

  • Temperature Rating: 20° F (≈ −7° C) 
  • Fit / Length Options: Regular (up to 5′10″)
  • Trail Weight: Regular ~ 2 lb 10 oz
  • Fill Type: 650-fill DownTek™ water-resistant down + FireLine™ ECO synthetic insulation in areas prone to pressure (hips & feet)
  • Shell / Lining: Nylon ripstop shell & polyester taffeta lining, both with water-repellent finish (no intentionally added PFAS)
  • Zipper: Centered, long, ambidextrous with anti-snag locking, includes draft tube and no-draft zipper garage
  • Hood & Pillow Features: Jacket-style hood; “Pillow Barn” stretch mesh pocket accessible from both sides to keep pillow secure
  • Packed / Compressed Size: Regular: ~7″ × 8″ compressed
  • Included Accessories: Stuff sack + storage sack; exterior loops for hanging or storing dry

*Sleeping Bags are final sale for hygienic reasons
CARE & MAINTENANCE

Store your bag in its mesh storage sack (or hanging) in a cool, dry place away from heat. When it’s time to wash, use a front-loading washer (no agitator) on a warm, gentle cycle with a down-specific soap like Nikwax Down Wash Direct. Rinse twice, then tumble dry on low with clean tennis balls to restore loft. For extra fluff, finish with short 5-minute bursts on high heat, letting the bag cool between cycles. Never use bleach, fabric softeners, irons, or dry cleaning — they’ll damage your bag.
SHIPPING & RETURNS

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Need to return something? Just let us know.

About Big Agnes

For over 20 years, Big Agnes has been designing gear to help people sleep more comfortably outdoors. Born in Steamboat Springs, Colorado, and inspired daily by the mountains, rivers, and trails that surround them, their team builds tents, sleeping bags, and shelters that are tested in real conditions and trusted on adventures around the world.

Big Agnes is also committed to protecting the places we love. From using sustainable materials to supporting public lands and reducing environmental impact, they design gear with both adventure and responsibility in mind. Their goal is simple: make your time outside more comfortable, more memorable, and better for the planet.

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