SKU: 40778429715

Sidewinder 20 Regular

Sale price$148.47 Regular price$164.97
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Ships within 48 hours · Estimated delivery Oct 10 - Oct 15

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Description

Sidewinder 20 RegularTraditional 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 7 oz
  • ISO Comfort: 30°F
  • ISO Limit: 19°F
  • Total Fill Weight: 15oz Down + 6.5oz Synthetic
  • Compressed Bag Size: 10" x 8"
  • Stuff Sack Size: 14L 8" x 17.5"
  • Max User Height: 6'
  • Recommended Pad Size: Works with any pad size or style
  • Shoulder Girth: 61"
  • Hip Girth: 55"
  • Foot Girth: 36"
  • 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: 40778429715

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Anthony
Los Angeles, US
★★★★★ 5
Look great
Size: 10, Color: White/Navy
Comfortable and look great
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Reviewed in the United States on April 17, 2026
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Lauren
Lowell, US
★★★★★ 5
Stylish and Quality
Size: 10, Color: White/Moonbeam
Amazing. Not a dupe. very quality material and shoe. love newbies. and love when my bf wears them 😋
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Reviewed in the United States on April 4, 2026
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DG
Dallas, US
★★★★★ 4
Reliable Pair of Sneakers
Size: 9.5, Color: Sea Salt/Walnut
These New Balance sneakers are really comfortable and have a clean, stylish look that works for both casual wear and light activity. Fit is true to size and they feel supportive, though they could use a little more cushioning for long hours on your feet. Overall, a solid and reliable pair of sneakers.
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Reviewed in the United States on August 31, 2025
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Edgar Martinez
Birmingham, US
★★★★★ 5
Nice
Size: 9.5, Color: White/Team Red
They arrived on time and I liked them very much.
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Reviewed in the United States on May 12, 2026
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Keegan Glatt
Whiting, US
★★★★★ 5
Best sneakers on amazon!
Size: 10.5, Color: White/Light Blue
Best sneakers on amazon ever. I bought them on sale for around $45 and do not regret it at all. They are of superior quality and fit amazing. Comfy to wear all day and seem like they are going to last quite awhile. Very easy to clean as well.
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Reviewed in the United States on October 7, 2025

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