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Mountainsmith - Arapaho 20d Sleep Bag

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Mountainsmith - Arapaho 20d Sleep Bag

Availability: Out of stock

Stock #: 348Z-

Control your climate with the Arapaho's innovative J-zipper, allowing you to unzip for ventilation and keeps the cold out with a thick baffle running the length of the zipper. In order to maximize warmth with minimal weight, the Arapaho utilizes a 60/40 insulation split from top to bottom. Combining the generous neck baffle with the form-fitting hood, you will easily snug yourself into a cozy cocoon. To ensure that this bag will last for many years, it comes with both a stuff sack and a mesh storage sack that allows the bag to dry and maintain loft properly while in storage. EN rated for a lower limit of 23F, the Arapaho will give you the needed comfort to maintain your temperature throughout Spring, Summer, and Fall.

Temperature Rating:

  • 20 Degrees


  • Vertical V-baffle torso
  • Right hand J-zipper
  • Form fitting adjustable hood
  • Baffled neck collar
  • Full-length draft tube
  • Mesh storage sack included
  • Sil-nylon stuff sack included
  • Second zipper for footbox ventilation
  • Anti-snag zipper reinforcement
  • Relaxed mummy shape
  • Differential cut with offset baffle construction
  • 60/40 Insulation split(top/bottom)


  • EN Comfort Rating: 32°F / 0°C
  • EN Lower Limit: 23°F / -6°C
  • EN Extreme Limit: -11°F / -24°C


  • Exterior: 75d x 240T Diamond poly Ripstop, W/R, CIRE
  • Liner: 70dx210T Polyester W/R, CIRE
  • Fill: MountainLoft™ Hollowfibers
  • Stuff Sack: 40dx244T Sil-Nylon RipStop
  • Zipper: YKK® 2 Way Autolock


  • 80" x 32.5" / 203 x 83 cm
  • Stuffed: 16" x 9.5" / 41 x 24 cm


  • 1 Person

Fit Range:

  • For sleepers up to 6' 4"

Shoulder Girth:

  • 65"


  • 3 lbs 15 oz / 1.7 kg

Fill Weight:

  • 2 lbs 7 oz / 1.1 kg

Additional Information