Demo Deer Park 30

Big Agnes

  • $179.97
  • Save $119


  • Underside insulation has been eliminated and replaced with a sleeve for a Big Agnes pad or any 25-in.-wide sleeping pad (sold separately)
  • Integrated full pad sleeve has stretch fabric panels on the sides to accommodate different pad thicknesses
  • Unique quilt-like construction and rectangular shape turn your sleeping bag into a backcountry bed; compartmentalized, horizontal baffled construction prevents down shifting
  • DownTek water-repellent down repels water while maintaining insulating value; DownTek absorbs 30% less water and dries 60% faster than untreated down
  • DownTek provides antimicrobial and antibacterial protection; environmentally safe PFOS/PFOA free Nano treatment technology
  • Free Range Hood design gives you the freedom to lift your head while snuggled in the hood
  • New cordlock lets you un-cinch the hood with one hand
  • Down-filled collar at top seals around the neck to prevent warm air from escaping and cold air from entering
  • Large draft tube located behind the zipper prevents warm air from escaping and cold air from entering
  • Continuous oversize draft wedge insulates the connection between the bag and pad to prevent cold air from entering
  • Double zippers allow entry from either side of bag; when unzipped, top of bag can be used like a comforter
  • Thanks to their double zipper design, all Big Agnes Park bags mate easily
  • Pillow Barn keeps your pillow from slipping away during the night
  • Interior fabric loops keep sleeping bag liner from twisting and bunching (liner sold separately)
  • Exterior loops for hang drying or storage
  • Includes mesh storage sack and nylon stuff sack


Technical specs

Best Use
Temperature Rating (F)
30 degrees (F)
Temperature Rating (C)
-1 degrees (C)
3 lbs. 14 oz.
Ripstop nylon
Zipper Location
Insulation Type
Water-Resistant Down
600-fill DownTek down
Fill Weight
18 ounces
Nylon taffeta
Sleeping Bag Shape
Fits Up To (in.)
78 inches
Shoulder Girth (in.)
80.5 inches
Hip Girth (in.)
75 inches
Stuff Sack Size
9 x 20 inches
Stuff Sack Volume
21 liters
Compressed Volume
11.5 liters