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Big Agnes Lost Dog 45 Degree Sleeping Bag

geartrade  |  SKU: LAURA5243
$9007 47% Off

Original price


Excellent  NEW
Never used. Shows no signs of wear. New items may have the original tags or come in their original packaging.

This gear should be like new with very minimal use and wear.

This gear is still in good shape. There’s some wear and tear, but has plenty of life left in it. Signs of wear may include pilling, snags, lint, animal hair, dried dirt, and minor but noticeable staining, etc.

This gear is still usable and is in OK shape, but shows noticeable signs of wear and tear. Fair condition products likely have cosmetic blemishes throughout such as pilling, lint, animal hair, and dried dirt. Physical damages such as holes, tears, loose stitching, and staining are often found on Fair items. Fair items are valued for function over form.

Free Shipping on Orders $100+*

Free Shipping on Orders $100+

  • Offer valid on products purchased from the seller Geartrade.
  • Not valid on orders shipped to Alaska and Hawaii
  • Not valid on products in the following categories: complete bikes, bike frames, bike wheels, travel cases, kayaks, inflatables, pontoons, SUP's, surfboards,wakeboards, crash pads, windsurf boards, cargo boxes, car racks, skis, snowboards, tents, backpacks and coolers

14-Day Returns*

We offer a generous no-questions-asked return policy.

14-Day Returns


Are the product photos of the actual items?

  • Yes! Geartrade does not use stock photos on their used gear. What you see, is what you get.
  • Some items in new condition may have stock photos.

Why should I buy used gear?

  • Good gear is built to last, you can save a lot of money and it's great for the planet.

I want to sell gear - what do you accept?

What if gear is not as pictured/ is broken or doesn’t fit, etc.?

  • You can return it! Here's our policy

How fast do you ship?

  • Most orders placed before 1pm MST are shipped out that day. We ship Monday-Friday.

I used to be able to sell stuff directly on the site. What happened with that?

  • You can still sell your gear on Geartrade! Now, we offer a consignment program that makes it easier for sellers and a better experience for buyers. Learn more
Why Geartrade?
  • Hand-inspected by gear experts
  • 14 day no-questions-asked returns on Geartrade items
  • Steep Discounts on Premium Outdoor Brands
  • Over 3 million pounds of gear diverted from landfills since 1999

The Big Agnes Lost Dog 45 Degree Sleeping Bag is a must-have for anyone who enjoys backpacking and summer camping. This sleeping bag is designed to keep you comfortable in temperatures as low as 45 degrees, making it perfect for those cooler summer nights. The bag is filled with FireLine™ ECO Synthetic Insulation, which is not only warm but also environmentally friendly. The shell is made from rip-stop nylon, ensuring durability and longevity. The bag also features a full-length zipper, allowing for easy access and ventilation. The Big Agnes Lost Dog 45 Degree Sleeping Bag is not just about comfort and warmth, it's also about convenience. It is lightweight and compressible, making it easy to pack and carry on your backpacking adventures. The bag also features an integrated pad sleeve, so you never have to worry about your sleeping pad slipping out in the middle of the night. The bag also comes with a stuff sack for easy storage and transport. With the Big Agnes Lost Dog 45 Degree Sleeping Bag, you can enjoy your summer camping trips with comfort and ease. 
This UnNew Big Agnes Lost Dog 45 Degree Sleeping Bag is in Excellent condition. 
Products in Excellent condition have seen minimal use and wear. Any imperfections are purely cosmetic and do not affect the intended performance of the product.   


  • Non-hooded design is ideal for summer camping or use as an overbag
  • Free Range foot-box - creates wiggle room for your feet
  • Rectangular shaped bag
  • FireLine ECO Synthetic insulation (100% post-consumer recycled polyester)
  • Anti-snag zipper for a smooth, quick zip
  • YKK #5 anti-snag locking zipper
  • Zipper Garage
  • Mate together left and right zip bags
  • No-draft collar, no-draft wedge, no-draft zipper
  • Interior fabric loops for sleeping bag liners
  • Exterior loops for hang drying or storage
  • Mesh storage sack & polyester rip-stop stuff sack
  • Nylon rip-stop shell fabric with a water repellent finish
  • Polyester lining
  • BEST USE: Backpacking, Camping
  • FILL MATERIAL: FireLine Eco Synthetic
  • FITS TO LENGTH: Regular: 5' 10"; Long: 6' 6"
  • INSULATION TYPE: Synthetic
  • ITEM WEIGHT: Regular: 1 lb, 7 oz; Long: 1 lb, 10 oz
  • Stuff Sack and Storage Sack Included
  • PACKED SIZE: 7.5" x 15" (stuff sack size, but compresses even smaller)
  • SHELL MATERIAL: Nylon Ripstop w/ DWR
  • LINER MATERIAL: Polyester

Not everything needs to be new. Earth matters too.

Wear it Out ™

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