Columbia Reactor 35 Mummy



Lightweight and highly compressible bag. I have used…

Rating: rated 4.5 of 5 stars
Source: bought it new
Price Paid: $160


Lightweight and highly compressible bag.


  • Packs very small.
  • Water resistant (Omni-Shield)
  • Warms up fast (Omni-Heat)
  • Accurate temperature rating (at least for warm sleepers like me)
  • Lightweight
  • Nice zipper
  • Nice construction
  • Very reasonably priced


  • No loops for sleeping pad straps

I have used the bag down to 30°F and was warm wearing my UA Coldgear long sleeve and pants. I've slept in it in a t-shirt and underwear down to around 35°F.  There weren't any cold spots or drafts and the bag warms up very quickly with the Omni-heat lining, which I expected to be a gimmick.  

I'm 6-1 and the regular size bag fits me perfectly. Plenty of room in the shoulders and I can comfortable lay without touching either end of the bag, but close. Easy to get in and out of, the zipper is "snag-proof".  

The Omni-shield makes the bag water resistant, which works great for nights with heavy condensation if you use a single walled tent like I do. The bag compresses to be very small and weighs only 2lbs. The fabric it is made of seems very delicate, but my 70 lb catahoula moves around and sleeps on my legs at night and it doesn't even have a snag or hole anywhere from his nails after at least a dozen nights.

Columbia Reactor 35 Mummy

previously retailed for:
$69.73 - $159.00

The Columbia Reactor 35 Mummy is not available from the stores we monitor. It was last seen March 27, 2015 at REI.

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