Big Agnes Lost Dog -18C Winter Sleeping Bag - Unisex 5064-273

Big Agnes Lost Dog -18C Winter Sleeping Bag - Unisex


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Show Description

Get a great night's sleep even in winter. Recycled polyester insulation keeps you warm and it's easier to wash and care for than down. With the Big Agnes’ System, you don't have to worry about rolling off your pad in the middle of the night. An integrated sleeve holds the pad against the bag, and by doing away with insulation on the bottom, it reduces overall weight and bulk. The cut is roomier than a traditional mummy bag, but the weight is comparable to a narrower style.

  • Shell is lightweight nylon with a water-repellent finish.
  • Lining is soft polyester microfiber.
  • FireLine™ Eco insulation is 100% post-consumer recycled polyester. High-loft fibres are tightly woven for compressibility, warmth and durability.
  • Flow™ construction uses horizontal baffles to create tunnels of warmth that wrap around your body and prevent the insulation from shifting.
  • Draft flap behind the zipper, yoke and draft wedge at the connection between the pad and the bag ensure cold air doesn't sneak in.
  • Sleeping pad sleeve has side stretch panels to accommodate different pads. Regular fits a 51– 64 x 183cm pad. Long fits a 51–64 x 198cm pad.
  • No insulation on the bottom, so use with a sleeping pad that has an R-value of 4+.
  • Free Range Hood so you can move your head when fully zipped up.
  • One-handed hood adjustment.
  • Built-in pocket keeps a pillow in place.
  • Interior loops for attaching a bag liner.
  • Hang loops let you air it out.
  • Includes a mesh storage bag and a nylon stuff sack.


Recycled content

Tech specs

Show Tech specs
Ideal for
  • Backpacking
  • Car camping
  • Regular fits to 5' 10" (178 cm)
  • Long fits to 6' 6" (198 cm)
  • Wide Long fits to 6'6" (198 cm)

The number of average sized people that the product can comfortably sleep.

Temperature -18°C
Shape Barrel
Insulation Synthetic
Technology FireLine
Construction Offset quilt
Face fabric Nylon ripstop
Lining/backer Polyester

An insulated collar that covers yours neck and shoulders to reduce heat loss.

Additional feature(s)
  • Sleeping pad sleeve or straps
  • Draft tube behind zipper
  • Home storage sack included
  • Stuff sack included
  • DWR-treated shell fabric
  • Interior pocket(s)
  • Pillow pocket
Product sustainability Recycled content
Made in China