Big Agnes

Big Agnes Lost Dog 15° Sleeping Bag

  • Sale
  • $159.96

  • Regular price $199.95


GOHUNT Highlights

  • The Lost Dog 15 sleeping bag is an all-around great choice for backcountry mid/late-season hunts
  • 15° sleeping bag with FireLine ECO synthetic insulation, making it a great choice when wet conditions are a concern
  • Enough comfort features for an overnight trip and light enough for multi-day hunts

Manufacturer Highlights

  • Nylon ripstop shell fabric with a water repellent finish
  • Soft, cozy polyester lining
  • FireLine ECO Synthetic Insulation - 100% post-consumer recycled polyester
  • Features low denier fibers that are tightly woven and provide high loft, compressibility, high weight-to-warmth ratio, and durability
  • The regular length bag weighs 3 lbs 3 oz, while the long version is 3 lbs 10 oz and the wide long version is 4 lbs
  • Warranty - Manufacturer or material defects

Big Agnes System bags with FireLine ECO synthetic insulation offer a roomy, rectangle-shaped sleeping space with an integrated Flex Pad Sleeve on the bottom. With technical fabrics and construction, 100% recycled, super-warm insulation, and tons of comfort features, these comfortable sleeping bags are designed to be lightweight enough for backpacking but cozy enough you'll want them in the campground too. The streamlined silhouette and Flow construction increase the thermal efficiency keeping you warm from head to toe. The Flex Pad Sleeve unites easily with your pad, and as you change positions over the course of the night, it will keep you from rolling off your pad.

*air pad not included

Weight Regular: 3 lbs 3 oz
Long: 3 lbs 10 oz
Wide Long: 4 lbs
Pack Size Regular: 8" x 9.5"
Long: 8" x 10.5"
Wide Long: 9" x 12.5"
Temperature Rating 15°
Sleeping Bag Shape Rectangular
Insulation Type FireLine™ ECO Synthetic Insulation
Fill Weight Regular: 31 oz
Long: 35 oz
Wide Long: 40 oz
Max User Height 5 ft 10 in (Regular), 6 ft 6 in (Long), 6 ft 6 in (Wide Long)
Water-Resistant? Yes
Material Nylon rip-stop shell fabric with a water repellent finish
Manufacturer Warranty Manufacturer or material defects

Customer Reviews

Based on 7 reviews
Joseph Niles
Good, but still a fair weather bag

The bag was good for what it is, but it’s not a 15 degree bag. It is a reasonably priced early fall, late spring bag though. My buddy and I both have this bag, and both of us complain that in any temps under 40 deg it’s iffy at best. We had multiple 30-35 deg nights and were cold wearing multiple layers (I resorted to wearing my all of my hunting gear, and was still chilled…3-4 layers on top, 2 on the bottom). Do not think you will hop in the bag with your skivvies and sleep like a baby (unless its 45+ maybe). If it was just me that felt this way then it would be easy to call me a….well you know. But my backcountry partner and I both had the exact same impression and we are camping several days/weeks a year. It’s a great, light, mild weather, bag from a fantastic company that should be rated at 30 degrees or higher. While the price is tempting for a 15 degree bag, don’t be a cheap skate like us. Just pay up and get a higher end (Big Agnes) bag. It’s our own damn fault, not Big A’s.

Did the job

The sleeping bag itself kept me plenty warm. I thought it was supposed to come with a stuff sack but I must have read wrong somewhere and I tried to use the Big Agnes foam pad underneath in the mesh holding spot for a sleeping pad and it didn’t fit right but again probably something I misread for those to be compatible. All in all the sleeping bag was warm and did the job.

James Milicia
Lost dog

Good quality bag. Works well with the Big A Qcore insulated inflatable mat.

Mike Dow
Haven’t used it yet

I gave it 5 stars but haven’t used it. Bought it for September backpacking in greater Yellowstone. It’s a little heavy but I needed a 15 degree bag that wasn’t crazy expensive

Great bag for the price

Just got back from a late season Colorado Elk Hunt. Temps were in the single digits at night. This bag kept me very warm and comfortable.

One point = $1
Must be an INSIDER to earn
One point = $1
You may earn points during your free trial but must be an INSIDER to redeem