null
Skip to main content
sale

Big Agnes Men's Sidewinder SL 35 Down Sleeping Bag

MSRP: $239.95
Was: $239.95
Now: $174.88
(You save $65.07 )

How Can I Get It?

please choose a product variant first

Relax and Sidewind

After a long day on the trail, sometimes you just need to relax and unwind. But that can be hard when you're forced into a rigid sleeping position on your back. Don't worry, Big Agnes has you covered with the Sidewinder SL 35 Down Sleeping Bag. Designed for campers who sleep on their sides, this lightweight sleeping bag is specially constructed to move with you throughout the night from one side to another. Packed with lightweight, water-resistant warmth in the form of 650-fill Downtek, the Sidewinder is also equipped with body-mapped synthetic insulation at your feet and by your hips to keep pressure points to a minimum. And since it's a Big Agnes sleeping bag, it comes with everything you know and love, like an integrated Pillow Barn, insulated draft tube, and a tough shell fabric to ensure that this bag will be in your arsenal for years to come.

Features

  • 3-season sleeping bag that lets you sleep how you want
  • Specially constructed to accommodate side-sleeping campers
  • 650-fill Downtek™ provides a high warmth-to-weight ratio
  • Body-mapped synthetic insulation provides extra cushion in the hips and feet
  • Integrated Pillow Barn with stretch mesh keeps your pillow in place
  • Jacket-style hood hugs your face without causing unwanted pressure
  • Water-repellent finish on the shell and liner stop moisture from soaking your insulation
  • Storage bag and stuff sack - Included

Construction + Materials

  • Shell: Nylon rip-stop
  • Lining: Polyester taffeta
  • Insulation: Primary: 650-fill water-resistant DownTek™; Body Mapped: Fireline™ Eco Synthetic Insulation

Specs

  • Temp Rating: 35° F
  • Shape: Mummy
  • Best Use: Backpacking, Camping
  • Gender: Men's
  • Zipper Side: Center
  • Fits Up To: [Regular] - 6'; [Long] - 6' 6"
  • Bag Weight: [Regular] - 2 lbs; [Long] - 2 lbs 4 oz
  • Fill weight: [Regular] - 14.5 oz; [Long] - 17 oz
  • Compressed Size: [Regular] - 6" x 7"; [Long] - 6.5" x 8"
  • Stuff Sack Size: 7.5" x 15"

Reviews

We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.
4.8
Out of 5.0
A graph showing this site's review totals.
Overall Rating
95%
of customers that buy
from this merchant give
them a 4 or 5-Star rating.
Verified Buyer
November 5, 2025 by Monica (WA, United States)
“I was impressed with the selection and deals offered online. Glad I purchased from Campman.”
Verified Buyer
November 2, 2025 by Addy R. (United States)
“love the site’s easy of use and checkout and even a discount code”
Verified Buyer
November 1, 2025 by jose S. (United States)
“User friendly”

Questions

x Write a Review Write a Review
  Product Image
Please rate
It appears from your ratings that you may have an issue that needs attention. If you left a 1 or 2-Star rating by mistake, please correct it before continuing. Or, if your rating is correct, please leave us some feedback so that we can better serve you.

Continue to feedback.

No thanks. I would rather not participate in rating.

Only 50 characters left to turn your standard review into a featured review!

Please enter your information below so we can confirm that you received your order and that the transaction went smoothly.:

Your email is safe. Your email is safe. It will only be used for order confirmation and customer care.

Survey Powered by Shopper Approved