Skip to main content

Big Agnes Lost Ranger 3N1 15 Degree Sleeping Bag

Secure TransactionSecure Transaction

Find Comfort

If you’ve ever wished that your sleeping bag was more like your bed at home, the Big Agnes Lost Ranger 3N1 15 Degree Light Weight Sleeping Bag could be exactly what you’ve always wanted. It’s built on the 3N1, or three-in-one, concept, which combines a lightweight 35 degree inner bag and a hybrid 50 degree outer bag that’s halfway between a mummy bag and a bed. That gives you the option to double up on cold evenings, employ just the mummy bag as a minimalist setup, or use the outer bag as a platform that perfectly accommodates your sleeping pad and your pillow for a just-like-home feel. Better yet, the interior mummy bag is built on the Sidewinder profile, which is ideal for side sleepers. And while all of these Big Agnes-exclusive features in one package might seem overwhelming, the result is actually incredibly straightforward — a great night’s sleep while you’re enjoying the outdoors.


  • Modular sleeping bag system that gives you more options than ever
  • Combine both bags for 20 degree rating, or use either alone depending on conditions
  • Interior 35 degree sleeping bag is built on Sidewinder profile that’s optimized for side sleepers
  • Exterior 50 degree bag sleeps more like a bed and securely holds your pillow and sleeping pad
  • 650 fill DownTek™ waterproof down insulation retains warmth when wet
  • Flex Pad Sleeve accommodates sleeping bags 20” x 72” to 30” x 78”
  • Pillow Barn keeps your pillow in place all night
  • Includes mesh storage sack and nylon stuff sack
  • Regular size fits up to 6’, Long fits up to 6’ 6”


  • Best Use: Camping
  • Material: [Shell] DWR-treated Nylon Ripstop; [Lining] 20D recycled polyester taffeta; [Insulation] 650 fill DownTek™ waterproof down
  • Weight [Regular]: [Inner] 1 lbs 4 oz; [Outer] 1 lbs 8 oz; [Total] 2 lbs 13 oz
  • Weight [Long]: [Inner] 1 lbs 6 oz; [Outer] 1 lbs 11 oz; [Total] 3 lbs 1 oz
  • Compressed Size: [Regular] 9.5” x 9.5”; [Long] 11.5” x 10.5”