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Big Agnes Lost Dog 30 Sleeping Bag

MSRP: $189.95
Was: $189.95
Now: $132.88
(You save $57.07 )

Big Agnes designed the Lost Dog 30 Sleeping Bag for those of us who want to get into the backcountry and stay comfortable while we're at it. Weighing only 3 pounds, this sleeping bag is light enough to take out backpacking but is still loaded with comfort features to make sure that you don't wake up feeling stiff and sore every morning. The 100% recycled FireLine™ ECO synthetic insulation fibers are like individual little heaters lining your entire body and the streamlined silhouette makes sure that you don't miss out of any of that warmth. A Flex Pad Sleeve and Pillow Barn keep your sleeping pad and camp pillow in place throughout the night while the Free Range Hood lets you check to see if the sun is up yet without getting out of your bag.


  • Big Agnes system bags combine technical design while maximizing comfort
  • Streamlined silhouette optimizes heat regulation
  • Flex Pad Sleeve stretches to conform to multiple pad sizes
  • Low profile cordlock lets you un-cinch the hood with one hand
  • Regular and long bags fit 20" - 25" wide pads
  • Free range hood allows you to move your head comfortably
  • Pillow Barn - Keeps your pillow from slipping away during the night
  • Internal hood drawcord gives a secure fit when tightened
  • Free Range Footbox - gives your feet plenty of wiggle room
  • Rectangular shaped bag
  • Anti-snag zipper
  • 65” /152cm YKK #5 anti snag locking zipper - regular bags
  • 70”/165cm YKK #5 anti snag locking zipper - long bags
  • 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 ripstop stuff sack 

Materials and Construction

  • Nylon ripstop shell fabric with a water repellent finish
  • Soft and comfortable polyester lining
  • Flow™ construction increases thermal efficiency
  • FireLine™ ECO Synthetic Insulation - 100% post-consumer recycled polyester


  • Temp Rating: 30° F
  • Bag Size: Regular or Long
  • Fits Up To: Regular - 5'10"; Long - 6'6" 
  • Pad Size: Regular - 20" x 66"; Long - 20" x 72"
  • Bag Weight: Regular - 3 lbs; Long - 3 lbs 6 oz
  • Fill Weight: Regular - 26 oz; Long - 30 oz
  • Insulation: FireLine™ ECO synthetic
  • Compressed Size: Regular - 7" x 8.5"; Long - 7" x 9.5"
  • Stuff Sack Size: Regular and Long - 8" x 17.5"