Big Agnes Lost Ranger 3N1 15 (650 DownTek) Regular

Availability: In stock

*Sleeping pad sold separately*


The Lost Ranger 3N1 15° sleeping bag is the latest evolution of the Big Agnes Sleep System. This modular bag design offers just what you’d expect: three bag configurations in one simple, yet technical sleep system that stays attached to your pad, so you won’t roll off in the middle of the night. It's the only bag you need for 3-season camping, backpacking and everywhere in between. These lightweight, down-fill bags deliver comfort and versatility no matter your sleep style or temperature preference.


INNER BAG: 35 degrees

OUTER BAG: 50 degrees

BOTH: 15 degrees



-3N1 System Bags offer three bag configurations for temperature versatility with a technical, roomy sleeping space that keeps you on your pad throughout the night 

-Pad Cinch System is adjustable to a variety of pad sizes. The self-equalizing drawstring easily connects bag to pad and the middle securement feature provides extra stability 

-Maximum thermal efficiency is achieved when inner and outer bags are layered, using offset quilting to minimize cold spots 

-Sleep on any side using the inner bag alone and within the outer bag. Three-quarter, anti-snag ambidextrous zipper stays out of the way when side sleeping 

-The inner bag design mimics our award-winning Sidewinder sleeping bag, designed for side sleepers and made to move with you from side to side 

-Keep your head snug and warm using the inner bag with jacket-style hood 

 -Spacious, rectangular shaped outer bag is constructed with no-draft collar, no-draft wedge, and two no-draft, anti-snag dual side zippers with zipper garage 

-Ultimate comfort and additional hand warmth with hand tuck pockets at the top of outer bag 

-Access from top and bottom of both inner and outer bag with two-way zipper for easy temperature control throughout the night 

-Easy access to discreet pillow barn on pad sleeve keeps your pillow tucked in all night 

-Create a doublewide system bag by mating two 3N1 bags 

-Storage sack & stuff sack included

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