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Reactor™ 25 Mummy II Sleeping Bag - Long


$69.98 $139.00
Style# 1525572
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Sizing True to Size


    • Color
    • Size
    • LNG
    • Dimension
    • LH
    • RH

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Style# 1525572


Built for medium to cold conditions, this performance sleeping bag is constructed with toasty Thermix insulation and a warmth-trapping Omni-Heat® lining. The soft shell material features advanced water repellency to keep you dry and comfortable.

  • Omni-Heat thermal reflective lining traps your body heat while providing breathability
  • Omni-Shield advanced repellency protects you from rain and condensation in the tent
  • Stash pocket
  • Offset quilt construction to avoid cold spots
  • LH/RH zip together
  • 17” x 9” compression sack included
  • Thermix MX™ Insulation
  • Draft tube insulates your zipper to keep out the cold
  • EN T-Comfort: 41 degrees F, 5 degrees C
  • EN T-Limit: 31 degrees F, -1 degrees C
  • EN T-Extreme: 3 degrees F, -16 degrees C
  • Average weight: 46 oz
  • Fill weight: 31 oz (regular), 34 oz (long)
  • Regular fits 6’ person, long fits 6’6” person
  • Imported

  • Shell: Omni-Shield 100% nylon 30D micro ripstop
  • Lining: Omni-Heat thermal reflective Microtex
Omni-Heat™ Reflective
Thermal Reflective Warmth
Water and Stain Repellent

Technology Videos

Play youtube video about Omni-Heat Reflective (tm)
Omni-Heat™ Reflective
Magic in a littlesilver dot.
Breathable material with little silver dots that reflect body heat.
Play youtube video about Omni-Shield (tm)
Helps you stay clean and dry by resisting absorption of liquids.


Reactor™ 25 Mummy II Sleeping Bag - Long 4.5 5 4 4
Finally a bag for burly men If your not a little guy the long is perfect, fits up to 6'6".. Roomy and comfortable, feet did get a little cold tho, thinking about getting the reactor 15 for the cold Central Oregon Cascade nights. Overall great bag for the money! Gotta love Columbia August 22, 2014
Great Bag for the Money Great bag that will keep you warm. I'm 6'2" 200lbs and ordered the long. The bag fits wonderful with a little extra room. The bag compacts down to very reasonable size with the included compression sack. Is it the ultimate ultra light long distance backpacking bag? No. But if you are going on a short distance backpacking trip for a night or two this bag will certainly work. I camped for the three nights in the NC Smoky Mountains with temps in the low 30's and was more than comfortable. My only complaint is that the zipper gets hung up more often than I like. The zipper does not feel very robust and could be the bags only week spot. Great bag overall and I would recommend. May 15, 2014
Great Bag! I got the bag and couldn't wait to use it, so some friends of mine decided to spend sometime in a Florida state park for a few nights. The bag compressed well enough to get into the bottom of my backpack. The bag is super warm! I used it in 40-45 degree nights that were humid and damp, and I stayed extremely warm and dry the entire time. The only issue that I saw was that the zipper would get stuck sometimes, but you just have to hold the tab that runs down the inside of the bag when you're zipping it up. Great bag for anyone. March 9, 2014
Nice bag I really like this sleeping bag and feel it's a great value for the price. The Omni-heat lining seems to work as I feel the bag warm quickly after I get into to. August 2, 2013
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Size & Fit Guide

Size Chart

How to Measure

Columbia Fit Guide

How to Measure

  • Fold up at dotted line.
  • Place against a wall or other 90 degree surface.

    Place heel against fold/wall on flat level surface.
  • Mark the end of the longest toe with a pen or pencil.
  • Measure both feet and use the larger measurement.
  • Read measurement and compare to size chart.
  • When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your country’s shoe measurement standard.

Shipping & Returns

Shipping & Returns

Shipping Information

Shipping Method Rate Expected Delivery Time
UPS Ground $6.00 3-7 Business Days
UPS 2-Day Air $12.00 2-3 Business Days
UPS Overnight $19.00 1-2 Business Days
Free Standard Shipping

Return Policy

Returns are accepted within 30 days of the purchase date online or in-store. Your apparel must be in original and unworn condition, with tags still attached. Footwear returns must also include the original box.

Still Have Questions

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