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Big Agnes Men's Sidewinder Camp 20 Synthetic Sleeping Bag


Sleep on Your Side

If you prefer to sleep on your side, you're not alone, and now there's finally a sleeping bag built with you in mind. The Big Agnes Men's Sidewinder Camp 20 Synthetic Sleeping Bag is tailor-made for side sleepers with a unique construction that mimics your body's position while sleeping on your side and a centered zipper that won't get in your way during the night. A 360° wrap with a built-in hood sits comfortably around your head while providing convenient storage space for your pillow, meaning you won't wake up with a crick in your neck. Included hand pockets up top let you wrap the sleeping bag around you like a quilt, making the most of the high-loft insulation inside. Opting for 100% post-consumer recycled polyester insulation, Big Agnes wanted to do both you and the environment a favor by providing you with the warmth you need without wasting excess resources in the process.


  • 3-season sleeping bag designed for side sleepers
  • Built to match your body position when laying down on your side
  • FireLine™ ECO Synthetic Insulation made from 100% recycled polyester
  • 360° wrapped hood with hand pockets lets you wrap yourself up comfortably
  • 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


  • Temp Rating: 20° 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 14 oz; [Long] - 3 lbs 5 oz
  • Fill weight: [Regular] - 35 oz; [Long] - 40 oz
  • Compressed Size: [Regular] - 8" x 9"; [Long] - 9" x 9.5"
  • Stuff Sack Size: 9" x 20"