SKU: 3784739642

Sidewinder 20 Long

Sale price$157.47 Regular price$174.97
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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Sidewinder 20 LongTraditional mummy bag optimized for side sleepers. Specifically designed for the over 60% of people who sleep on their sides, the second generation of the patented Sidewinder side sleeper technology ensures warmth, comfort, and ease of use in any position you settle into. Constructed for comfort, with additional body mapped insulation to optimize warmth where you need it and provide cushioning and support at the hips and shoulders, easing pressure

Traditional mummy bag optimized for side sleepers. Specifically designed for the over 60% of people who sleep on their sides, the second generation of the patented Sidewinder side sleeper technology ensures warmth, comfort, and ease of use in any position you settle into. Constructed for comfort, with additional body mapped insulation to optimize warmth where you need it and provide cushioning and support at the hips and shoulders, easing pressure points and other ‘side effects’. The Sidewinder is a side sleeper’s dream bag with technical features that roll seamlessly from one adventure to the next, and from one side to the other at night. Optimized profile and thermally efficient footbox is patterned to mimic body position while lying on your side.

  • Down fill with a water-repellent finish throughout the bag provides lofty warmth
  • Strategically placed synthetic insulation to provide padding and pressure relief at the knees, hips, and shoulders
  • 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
  • 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
  • Storage sack & stuff sack included
  • Total Weight: 2 lb 11 oz
  • ISO Comfort: 30°F
  • ISO Limit: 19°F
  • Total Fill Weight: 16.5oz Down + 7oz Synthetic
  • Compressed Bag Size: 10.5" x 8.5"
  • Stuff Sack Size: 14L 8" x 17.5"
  • Max User Height: 6' 6"
  • Recommended Pad Size: Works with any pad size or style
  • Shoulder Girth: 65"
  • Hip Girth: 59"
  • Foot Girth: 40"
  • Shell: Recycled polyester ripstop featuring a water-repellent finish without intentionally added PFAS chemicals
  • Lining: Recycled polyester taffeta featuring a water-repellent finish without intentionally added PFAS
  • Primary Fill: 650 fill Downtek™ PFC-Free repels water while maintaining insulating value, with bluesign® Certified 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
  • Machine wash in a washing machine WITHOUT AN AGITATOR, agitators are likely to cause damage to your gear
  • U.S. Patent 11957260 B2

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3784739642

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4.5 ★★★★★
Based on 25 reviews
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Product Reviews
A
Verified Purchase
April Zheng
Bozeman, US
★★★★★ 5
Great product
Color: Black
This is very sturdy and great quality. Its quite cheap for what your getting to it’s not cheap thin like plastic it feels thick and you could put a LITTLE weight on it it’s stable and protects your privacy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
A
Verified Purchase
Amazon Customer
New York, US
★★★★★ 5
Good Product
Size: 3 Panel-102'', Color: Beige
I got these dividers for outdoor use for some privacy from neighbors. They arrived quickly and were easy to set up. They look good, and though the legs don’t offer stability against any amount of wind—which I expected as it wasn’t advertised for outdoor use—all it took was placing a cinder block on the feet to hold it up right. Coverage is good, it’s easy to fold and move as needed, and it’s light weight. All in all a decent product. I will caution the purchase of “used like-new,” as both of the dividers I ordered were previously returned items, and one came missing a cap, instructions were not included, and the poles were all mixed up and not properly labeled. If I had not ordered a second divider (which did include the instructions) I would have had a much harder time figuring out which pieces were which and how to put them together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2025
J
Verified Purchase
julie h.
Cuba, US
★★★★★ 5
So versatile! Perfect solution for dividing a room.
Size: 4 Panel-88'', Color: Grey, Size: 4 Panel-88'', Color: Grey
Perfect solution for my space. My office has to double as the hangout room for the kids and I wanted something that would block off my computer so it is left alone. This space allows me to close off my computer as much or as little as I want. It is lightweight yet has sturdy feet. This is important so that if it gets bumped it won’t topple over. The price was great and the build time wasn’t too bad! I would recommend two people for set up. I went with the grey panels and I think I’ll end up hanging some twinkle lights at some point. Great purchase!
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Reviewed in the United States on October 9, 2025
A
Verified Purchase
Abbi
Natrona Heights, US
★★★★★ 4
4/5 Stars
Size: 4 Panel-88'', Color: Black
Very tall and easy to set up, the only thing I will say is that they do have large gaps in between, so you won't have 100% privacy unless you add a curtain in the back. Other than that, they are easy to fold, sturdy, and esy to assemble. The gaps are an easy fix so I would say they are worth it.
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Reviewed in the United States on April 16, 2026
T
Verified Purchase
Tyi Campbell
Phoenix, US
★★★★★ 5
Great product and worth the money.
Size: 4 Panel-88'', Color: Black
Portable and stable. Perfect size and gives me the privacy I need when working from home. Stability is great as long as you place the stands correctly it won't wobble. I love it.
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Reviewed in the United States on May 8, 2026

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