Big Agnes Sidewinder SL Sleeping Bag: 20F Down

backcountry  |  SKU: DWGCAZ5
$18675 43% Off

Original price

$32995

Shipping calculated at checkout.
Condition
Fair  NEW
Never used. Shows no signs of wear. New items may have the original tags or come in their original packaging.

UNEW WITH TAGS
This gear appears to be unused and may still retain its original retail tags and/or packaging. While this item has been passed down from a previous owner, it shows no signs of wear, use, or alteration and is in "like-new" condition.

EXCELLENT
This gear should be like new with very minimal use and wear.

GOOD
This gear is still in good shape. There’s some wear and tear, but has plenty of life left in it. Signs of wear may include pilling, snags, lint, animal hair, dried dirt, and minor but noticeable staining, etc.

FAIR
This gear is still usable and is in OK shape, but shows noticeable signs of wear and tear. Fair condition products likely have cosmetic blemishes throughout such as pilling, lint, animal hair, and dried dirt. Physical damages such as holes, tears, loose stitching, and staining are often found on Fair items. Fair items are valued for function over form.

Free Shipping on Orders $100+*

Free Shipping on Orders $100+

  • Offer valid on products purchased from the sellers Geartrade or Backcountry
  • Not valid on orders shipped to Alaska and Hawaii
  • Not valid on products in the following categories: complete bikes, bike frames, bike wheels, travel cases, kayaks, inflatables, pontoons, SUP's, surfboards,wakeboards, crash pads, windsurf boards, cargo boxes, car racks, skis, snowboards, tents, backpacks and coolers

FAQ's

Are the product photos of the actual items?

  • Yes! Geartrade does not use stock photos on their used gear. What you see, is what you get.
  • Some items in new condition may have stock photos.

Why should I buy used gear?

  • Good gear is built to last, you can save a lot of money and it's great for the planet.

I want to sell gear - what do you accept?

What is your return policy?

  • We offer a generous no-questions-asked 14 day return policy for eligible items. Final sale items are not eligible for return. You have up to 14 days to initiate a return after your order has been delivered. The item needs to be in the same condition we sent it to you (keep those tags on). Our full return policy can be found here: Return Policy

How fast do you ship?

  • Most orders placed before 1pm MST are shipped out that day. We ship Monday-Friday.
Why Geartrade?
  • Items are Hand-inspected by Gear Experts
  • Steep Discounts on Premium Outdoor Brands
  • Over 3 million pounds of gear diverted from landfills since 1999

Product Condition: The Sidewinder SL Sleeping Bag: 20F Down - Women's is in Fair condition. VFC - This Sidewinder SL Sleeping Bag: 20F Down - Women's Chinois Green/Mercury/Evening Primrose, small was previously owned for ten days.  The following observations were made regarding this item: *Storage bag is dirty. *Vendor tags are still attached. *Zippers function properly. *No holes or tears in material. * Item sold as is, all warranties void 

Size: Unisex small

Color: Chinois Green/Mercury/Evening Primrose

Retail Cost: $329.95

What Our Gearhead Experts Are Saying:

"I sleep on my side and always struggled with traditional mummy bags until I found the Sidewinder SL 20. This size fits me perfectly—no extra bulk or dead space—and the way it hugs and moves with me makes a huge difference on colder nights."

Just because we pack smaller doesn’t mean we compromise on comfort. The Sidewinder SL 20 Sleeping Bag is thoughtfully designed to match side-sleeping patterns with a shape that supports natural movement, all in a compact size built for efficient warmth and minimal wasted space. With a comfort rating tuned for shoulder-season nights, it's ideal for cool mountain camps or early spring trips where weight matters and comfort counts.

The hybrid insulation system combines lightweight 650-fill DownTek™ with body-mapped synthetic insulation in key pressure areas—like the hips, shoulders, and knees—giving us the warmth we need exactly where we need it. The close-fitting hood seals in heat, and the recycled polyester shell sheds light moisture without relying on harmful PFAS. Built for smaller frames without cutting corners, this bag keeps us warm, dry, and well-rested wherever we roll out for the night.


Sidewinder SL 20 Sleeping Bag delivers side-sleeper comfort in a compact, lightweight build (DWGCAZ5)

TECH SPECS

  • Responsible Collection: Recycled/Repurposed, Bluesign Approved (DownTek)
  • Material: [face fabric] 100% recycled polyester ripstop, PFC-free DWR finish, [lining] 100% recycled polyester, PFC-free DWR finish
  • Insulation: [primary] 650-fill DownTek, [body mapped] FireLine ECO (100% recycled polyester)
  • Shape: mummy
  • Zipper: full-length
  • Max User Height: 5ft 6in
  • Bag Length: small
  • Draft Tube: full-length
  • Fill Weight: 14oz down, 6oz synthetic
  • Degree: 20F
  • European Norm/ISO Comfort Rating: 30F
  • European Norm/ISO Lower Limit Rating: 19F
  • Stuff Sack: included
  • Stuff Size: 8 x 17.5in
  • Claimed Weight: 2lb 4oz
  • Activity: backpacking, weekend camping

Not everything needs to be new. Earth matters too.

Wear it Out ™

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