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As the name implies, this bag loves to bring the heat.

No matter how low the temperature dips at night, the Sierra Designs Pyro 15 Sleeping Bag will keep you toasty-warm while you snore away in camp. Down insulation keeps this sleeping bag light and Sierra Design's unique Core Comfort Technology puts all the insulation right where you need it. Pack this bag for a weekend camping trip in the fall and fight off the chill from head-to-toe at night.

  • Rated down to 15F, this three-season bag is best suited for cool to cold nights
  • Core Comfort Technology uses two-layers of baffles to keep the down insulation in place and safe from packing out, which means your bag stays warm even after seasons and seasons of use
  • Core Comfort Technology also places more insulation at your chest and core, precisely where you need to to maintain body heat in cold conditions
  • Snag-Free zipper tracks mean that you won't have to wrestle with your zipper when you have to climb out to do your business at night
  • Pad Lock attachment points allow you to connect your sleeping bag and a sleeping pad (sold separately) so you won't roll off your padding while you sleep
  • A zippered, insulated draft tube, adjustable hood, and draft collar help keep chilly drafts outside

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Sierra Designs Pyro 15 Sleeping Bag: 15 Degree Down

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Here's what others have to say...

3 5

Adequate, but needs improvement

I bought this bag a couple of years ago and have been using it in the backcountry for simple, relatively easy overnight or weekend trips. In that regard, the bag is not all that bag to heft around and use. However, when concerning colder temperatures and those who are more weight-conscious (i.e. a thru-hiker or someone who will be having to carry it for a few weeks/months), this is definitely not the bag for you. It only boasts a 600 fill down rating, while concurrently having a weight that is almost 3 pounds at the regular size. Another problem that I found in this bag was even when it was packed in its storage sack and/or in a compression sack, the thing was still huge (relative to most items you would try and jam in a pack and deem as "necessities"). In terms of price, this isn't all that bad of a deal, especially if you get it on a sale, but after having vetted it for some years, I would recommend saving the cash and buying something that is lighter, contains a higher down fill rating, and packs smaller.
I've only just gotten into the market for such bags, but I have found that Western Mountaineering and Feathered Friends are exceptional choices that exemplify all these characteristics, though Feathered Friends are cheaper by a sizeable amount. If you are trying to buy off Backcountry though, you will have to go with the WM brand, as BC doesn't stock the Feathered Friends brand :(

Unanswered Question

No stuff sack?

No stuff sack?

This bag supposedly comes with a stuff...

This bag supposedly comes with a stuff sack and a storage sack; however, it seems like I only received a storage sack (big white cotton bag). Is the information wrong, or am I missing a piece?

Best Answer

I just bought this bag myself and was perplexed as to the location of the stuff sack. I found mine inside the bag attached to the bottom of the zipper.

After emailing Backcountry about it, they informed me that the stuff sack is inside the sleeping bag itself. It is very, very tiny so I had to turn the bag inside-out to get it.

5 5

Very nice bag!

The overall effectiveness of the variable fill was good. Honestly, I did not notice much. It was warm, comfortable, a decent fit for me.
The warmth was great. Very well insulated.
The comfort of the material and the softness of the fill were great.
The head area was flexible and I could adjust things throughout the night as needed.
The zipper was smooth and worked very well.
It packed well for the backpack-small, light, easy.