Big Agnes Lost Ranger 3N1 Sleeping Bag: 15F Down

Lost Ranger 3N1 Sleeping Bag—modular sleeping bag system for versatile warmth and lightweight performance

What Our Gearhead® Experts Are Saying:

"The Lost Ranger 3N1 is my go-to for unpredictable conditions. The three configurations make it adaptable for anything from warm nights to frosty mornings, and it´s not even as heavy as carrying two sleeping bags—perfect for backpacking trips where versatility is key."

The Lost Ranger 3N1 Sleeping Bag is a versatile sleep system that adapts to our adventures. Designed by Big Agnes for maximum comfort and temperature range, it combines a Sidewinder-style inner bag and a roomy outer bag for three configurations in one. Use the outer bag for warm-weather outings, the inner bag when temperatures dip, or layer both for cozy warmth down to 15°F. Filled with 650 DownTek insulation, this modular system keeps us warm and dry, even in damp conditions, thanks to earth-friendly water-repellent technology.

Details

• Modular sleeping bag system with three configurations for varying temperatures
• Outer bag for warm weather, inner bag for cooler nights, or combine for 15-degree warmth
• Padlok Sleep System secures bag to single or double sleeping pads
• 650-fill DownTek insulation repels water and maintains warmth
• Jacket-style hood and oversized draft collars enhance thermal efficiency
• Offset quilt lines eliminate cold spots when layered together
• Includes storage sack and stuff sack for convenient packing
• Item #BAGZ2H9

Tech Specs

Responsible Collection

Recycled/Repurposed, Responsibly Sourced, [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-resistant 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

Cinch Pad Sleeve

Fill Weight

[combined bags] (small) 482g, (regular) 539g, (long) 595g, [inner bag] (small) 255g, (regular) 283g, (long) 312g, [outer bag] (small) 227g, (regular) 255g, (long) 283g

Degree

[combined bags] 15°F, [inner bag] 35°F, [outer bag] 50°F

European Norm/ISO Comfort Rating

[combined bags] 27°F

European Norm/ISO Lower Limit Rating

[combined bags] 15°F

Storage Sack

included

Stuff Sack

included

Stuff Size

8 x 17.5in

Claimed Weight

[combined bags] (small) 2lb 7oz, (regular) 2lb 12oz, (long) 3lb 1oz, [inner bag] (small) 1lb 1oz, (regular) 1lb 3oz, (long) 1lb 6oz, [outer bag] (small) 1lb 6oz, (regular) 1lb 9oz, (long) 1lb 11oz

Activity

backpacking, weekend camping

Manufacturer Warranty

limited