SKU: 66696539347

Mad River 40 Sleeping Bag (4°C)

Sale price$269.55 Regular price$299.50
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Shipping Estimate
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Mad River 40 Sleeping Bag (4°C)If it aint broke, dont fix it. The Mad River is a packable down mummy bag for the backpacking traditionalist who just wants a good nights sleep after a good day's slog. 650 fill power duck down means this bag packs small yet still lofts up tall, so you can comfortably recharge after a long day on the trail. Chemical free ExpeDry tech delivers forever performance without forever chemicals, permanently helping down dry quickly and maintain loft when

If it ain’t broke, don’t fix it. The Mad River is a packable down mummy bag for the backpacking traditionalist who just wants a good night’s sleep after a good day's slog. 650-fill-power duck down means this bag packs small yet still lofts up tall, so you can comfortably recharge after a long day on the trail. Chemical-free ExpeDry™ tech delivers forever performance without forever chemicals, permanently helping down dry quickly and maintain loft when sweat, humidity, and condensation try to dampen the mood—and the bag’s warming powers. A full-length anti-snag zipper and secondary side zipper give you precision comfort control and blanket-like coverage for changing conditions, sleeping positions, and tent card games. The roomy footbox gives your feet space to breathe, while the insulated draft tube ensures warm air doesn’t drift out when you’re drifting off to sleep. An internal stash pocket keeps valuables like a headlamp or contact lenses secure, while the included storage sack and compression sack ensure this bag is ready to pack down tight from day one.

  • RDS-certified 650-fill-power duck down with ExpeDry™ for lofty, compressible, quick-drying warmth
  • ExpeDry™ is a permanent, chemical-free alternative to DWR (Durable Water Repellent), providing quick-drying, loft-retaining performance in wet and humid conditions
  • Gender-free design: standard length fits sleepers up to 6'0"
  • 100% recycled shell and lining fabrics
  • Full-length, left-side 2-way zipper with an anti-snag slider for improved ventilation, versatility, and easy access
  • Short right-side zipper offers fold-down comfort and additional ventilation
  • Anatomically designed footbox with wrap-around construction provides warmth and roomy comfort
  • Internal stash pocket for contact lenses, headlamp, and valuables
  • Draft collar seals in warmth and prevents heat loss, even when tossing and turning
  • ISO temperature testing adheres to reliable international standards
  • Included storage sack and compression sack let you pack down, cinch up, and head out

Bag Temperature Celsius: 4°C
Bag Temperature Fahrenheit: 40°F
Product Care: Machine Wash Cold, Use Liquid Detergent, Do Not Use Powdered Detergent, Gentle Cycle, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Dry Clean, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet
Tested Comfort: 44ºF / 7ºC
Tested Limit: 35ºF /2ºC
Footbox Size: 48.8 in, 124 cm
Hip Girth: 57.9 in, 147 cm
Insulation Material: Duck Down
Insulation Type: Duck Down
Shoulder Girth: 63 in, 159 cm
Stash Pocket: YES
Stuff Sack Size: 11.8 x 6.3 in, 30 x 16 cm
Style Number: M16037
Product Weight: 772.0 g
Zipper Location: Left Zip

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: 66696539347

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4.3 ★★★★★
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K
Verified Purchase
Karen Worley
Port Orchard, US
★★★★★ 5
Dog approved!
My dogs love this. This is the 3rd time I have bought them. They are entertained for hours and keeping their teeth strong. They pay me no attention when they have this toy. 😂
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
C
Verified Purchase
CPickens
Lexington, US
★★★★★ 5
Extra Small Perfect for my Toy Dogs
My toy dogs love this so much that I ordered a second one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
A
Verified Purchase
aj
Whiting, US
★★★★★ 5
Our Dog Loves This One
We got our dog two nylabones and this benebone and he really prefers this one. Like the nylabones he barely even looked at, but he loves this one so much it's starting to splinter off a little. Apparently it can just be sanded down again but I'll probably end up getting more of these so that we can switch them out. I noticed that the shape also helps him be able to handle it with his paws.
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Reviewed in the United States on May 24, 2026
A
Verified Purchase
Ayla D
Louisville, US
★★★★★ 5
Initially showed little interest, then decided she loved it
The product itself looks great and is clearly very well made but my dog had zero interest initially in this which I find odd because many other similar toys she has attacked. Update —- several weeks later all of a sudden my dog decided she liked this and started chewing on it and has been her favorite - go figure Update 2 — it’s become her favorite chew and she’s obsessed with it! My older dog started chewing on it, and it broke one of her old teeth!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
R
Verified Purchase
Reggie/mixerjockey
Birmingham, US
★★★★★ 3
Chew toy
We have 8 pound 5 month pup she can chew up and end in about a week nylon should be a bit harder.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026

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