Early Bird Sale: 25% off select items with code EARLYBIRD25 

EARLYBIRD25

Big Agnes Sidewinder SL Sleeping Bag: 20F Down

backcountry  |  SKU: DWGCC3O
$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 is in Fair condition. VFC - This sleeping bag was previously owned for ten days.  The following observations were made regarding this item: *There is a little dust/dirt on the bag. *There is some animal hair that should come out with proper wash. *Comes with a storage bag. * Item sold as is, all warranties void * No vendor tag attached. 

Size: Unisex regular

Color: Chinois Green/Mercury/Evening Primrose

Retail Cost: $329.95

What Our Gearhead Experts Are Saying:

"I'm a side sleeper, and this is hands-down the most comfortable bag I've used. The body-mapped insulation makes a huge difference at the hips and knees, and I love how the bag moves with me when I roll over. The 20F rating is perfect for spring and fall trips."

We’ve tossed and turned our way through plenty of mummy bags, but the Sidewinder 20F Sleeping Bag finally gives side sleepers a reason to sleep well in the backcountry. Designed for the natural way most of us sleep, it features a sculpted shape that moves with us as we roll from side to side, plus extra room at the elbows and knees where we need it most. Whether we're curling up on a cool fall night or shifting positions mid-sleep, this bag keeps the warmth close and the pressure points off.

Insulated with a hybrid of water-repellent 650-fill DownTek™ and body-mapped synthetic insulation, the Sidewinder 20F targets warmth where we need it—around the hips, shoulders, and knees—while staying compressible enough to pack easily. The recycled polyester shell features a PFAS-free water-repellent treatment to block moisture and condensation, while the close-fitting jacket-style hood seals in heat without restricting movement. Lightweight, warm, and tuned for real comfort, it’s built for the way we actually sleep outdoors.


Sidewinder SL 20F Sleeping Bag delivers side-sleeper comfort with pressure-relieving insulation (DWGCC3O)

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: [regular] 6ft, [long] 6ft 6in
  • Bag Length: regular, long
  • Draft Tube: full-length
  • Fill Weight: [regular] 15oz down, 6.5oz synthetic, [long] 16.5oz down, 7oz 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: [regular] 2lb 7oz, [long] 2lb 11oz
  • Activity: backpacking, weekend camping

Not everything needs to be new. Earth matters too.

Wear it Out ™

Your Security Matters

Payment Methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Back to top