Big Agnes: Lost Ranger 15 Degree Down Sleeping Bag

An image of Lost Ranger 15 Degree Down Sleeping Bag
  • Zoom in for more detail

Our Price: $259.95 to $289.95

[$259.95] - RG/RZ     IMS#: 671671
[$259.95] - RG/LZ     IMS#: 671670
[$289.95] - LG/LZ     IMS#: 671672
  • Qualifies for free shipping.



The Lost Ranger 15 by Big Agnes offers warmth, compressibility and big comfort. Now available with DownTek™ water repellent down- this bag is perfect for the weight conscious backpacker who wants a little more room and has admitted that even the weatherman can’t know it all. With the integrated pad sleeve design, you can slip any 20” rectangular pad into your bag to keep you in place all night long.


  • DownTek™ water repellent down insulation
  • Integrated full pad sleeve. Never roll off your pad again
  • Rectangular shape offers more room in foot box and shoulders
  • Mesh storage sack & nylon stuff sack included
  • Built in pillow pocket holds a fleece or Big Agnes pillow
  • Interior fabric loops for sleeping bag liners
  • 70" YKK #8 zipper. Mate together our left and right zip bags with same size zipper
  • No-draft collar seals around neck to keep cold air from sneaking in
  • No-draft wedge insulates the connection between the bag and pad
  • No-draft zipper tube insulates along the length of the zipper
  • Shell fabric: Down proof, nylon microfiber rip-stop. WR surface treatment to repel water
  • Lining: Soft and breathable, down proof nylon microfiber with stain resistant finish
  • Pad sleeve fabric: Nylon rip-stop. WR surface treatment to repel water
  • Flow™ Construction: Insotect Flow™ is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Flow Construction eliminates lateral and vertical down shifting by using vertical chambers with Flow Gates to regulate fill positioning and density. Strategically placed Flow Gates minimize vertical down shifting while vertical chambers minimize lateral shifting. With continuous vertical Flow chambers in place of traditional side seams, Flow bags eliminate potential cold spots which can occur with side seams. Vertical baffles now flow with your body for more rapid and uniform body heat distribution.
  • LEFT OR RIGHT ZIPPER? When you are in the bag, on your back, the right zip will be on your right side, left zip on your left side


Fit :Regular - 5 ft 10 in
Long - 6 ft 6 in
Temperature Rating:15 °F
Stuffed Dimensions:8 in X 17.5 in
Weight:Regular - 2 lb 11 oz/ 1219 g
Long - 3 lb 3 oz/ 1389 g
Fill:650 Fill DownTek™
Shoulder Girth:Regular - 70 in/ 178 cm
Long - 73 in/ 185 cm
Hip Girth:Regular - 66 in/ 168 cm
Long - 69 in/ 175 cm
Foot Girth:Regular - 54 in/ 137 cm
Long - 55 in/ 140 cm

DownTek™ Insulation

Lost Ranger 15 Features with DownTek™

McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Suggested Products

Boot Jack 24

Boot Jack 24


Encampment 15

Encampment 15

$179.95 to $189.95

Insulated Q Core

Insulated Q Core

$119.95 to $199.95

Q-Core SL - Mummy

Q-Core SL - Mummy


Summit Hut: Start Your Adventure Here