Big Agnes Lost Ranger 3N1 Sleeping Bag: 0F Down

Lost Ranger 3N1 Sleeping Bag—modular sleeping system for all-season versatility and comfort

What Our Gearhead® Experts Are Saying:

"This 3-in-1 sleeping bag is a game-changer. The modular design lets me adjust for any trip—light and breezy for summer or combined for zero-degree nights. The pad retainer keeps me securely on my sleeping pad, and the Sidewinder inner bag moves with me as a side sleeper."

The Lost Ranger 3N1 Sleeping Bag combines innovation and versatility, offering three configurations in one modular sleeping bag system. Big Agnes crafted this system to handle everything from warm summer nights to freezing winter adventures, delivering maximum comfort no matter the season. Use the outer bag alone for mild conditions, the snug Sidewinder-style inner bag when temperatures drop, or combine both for ultimate warmth on frigid nights. The PadLok Sleep System keeps us secure on our sleeping pads so we can roll and adjust without slipping off. The semi-rectangular outer bag features a spacious, comforter-like design, while the inner bag includes a jacket-style hood for a cozy fit. Offset quilt lines eliminate cold spots when combined, ensuring warmth to zero degrees. With recycled materials and responsibly sourced 650-fill DownTek insulation, this system is as eco-conscious as it is efficient.

Details

• Modular sleeping bag system for versatile three-season use
• Combine inner and outer bags for warmth down to 0°F
• Outer bag includes PadLok system to stay secured to your sleeping pad
• Inner bag’s Sidewinder design is tailored for side sleepers
• Offset quilt lines eliminate cold spots when bags are layered
• 650-fill DownTek insulation repels water and retains warmth
• Includes mesh storage sack and stuff sack for convenience
• Item #BAGZ2H8

Tech Specs

Responsible Collection

Responsibly Sourced, Recycled/Repurposed, [insulation treatment] bluesign® APPROVED

Material

[inner bag] 20D recycled polyester taffeta, water-repellent treatment without intentionally added PFAS, [outer bag] (face fabric) 20D recycled polyester ripstop, water-repellent treatment without intentionall added PFAS, (lining) 20D recycled polyester taffeta, water-repellent treatment without intentionally added PFAS

Insulation

650-fill Downtek (RDS-certified), PFC-free water-repellent treatment

Shape

[inner bag] Sidewinder (mummy), [outer bag] semi-rectangular

Zipper

full-length

Max User Height

[small] 5ft 6in, [regular] 6ft, [long] 6ft 6in

Shoulder Circumference

[small] (inner bag) 59in, (outer bag) 66in, [medium] (inner bag) 62in, (outer bag) 69in, [long] (inner bag) 65in, (outer bag) 72in

Hip Circumference

[small] (inner bag) 51in, (outer bag) 58in, [medium] (inner bag) 54in, (outer bag) 61in, [long] (inner bag) 57in, (outer bag) 64in

Foot Circumference

[small] (inner bag) 40in, (outer bag) 52in, [medium] (inner bag) 43in, (outer bag) 55in, [long] (inner bag) 46in, (outer bag) 58in

Draft Tube

yes

Pad Retainer

[outer bag] Padlok Sleep System, Cinch Pad Sleeve, Pillow Barn

Fill Weight

[small] (inner bag) 510g, (outer bag) 255g, (combined bags) 765g, [regular] (inner bag) 567g, (outer bag) 283g, (combined bags) 850g, [long] (inner bag) 624g, (outer bag) 312g, (combined bags) 936g

Degree

[inner bag] 20°F, [outer bag] 45°F, [combined bags] 0°F

European Norm/ISO Comfort Rating

[combined bags] 12°F

European Norm/ISO Lower Limit Rating

[combined bags] -1°F

Storage Sack

included

Stuff Sack

included

Stuff Size

9 x 20in

Claimed Weight

[small] (inner bag) 1lb 14oz, (outer bag) 1lb 7oz, (combined bags) 3lb 5oz, [regular] (inner bag) 2lb 2oz, (outer bag) 1lb 10oz, (combined bags) 3lb 12oz, [long] (inner bag) 2lb 6oz, (outer bag) 1lb 12oz, (combined bags) 4lb 2oz

Activity

weekend camping, backpacking

Manufacturer Warranty

limited