A spectacular sleeping bag. Packable, light, and unbelievably…

Rating: rated 5 of 5 stars
Source: bought it new
Price Paid: $400


A spectacular sleeping bag. Packable, light, and unbelievably warm.


  • Warm
  • Lightweight
  • Packs down small
  • Pertex shell
  • Full-length zipper
  • Zipper doesn't snag
  • Cost


  • Difficult to stuff

In every review I try to find good things and bad things to say. I had a hell of a time coming up with anything bad to say about this sleeping bag.

I am a very cold sleeper.  I've tried all the tricks: eating prior to sleep, hot water bottles in the footbox, layering, blah blah blah.  I just sleep cold.  I have never been anything but toasty warm in this sleeping bag.

The Z-10 is somewhat constricting for me, but I'm a sprawler and a thrasher.  If it wasn't moderately constricting it'd lose insulation value so I can't really knock it for this as it's a personal thing.

With its full-length double zipper, the Z-10 is very easy to get into and out of.

The Z-10 has a pertex shell.  Don't worry about sneezing on it.  It's also a down bag.  For the love of god, keep it out of that creek.

The only bad thing I have to say about this bag is that it's a bit of a pain to stuff into the provided stuffsack.  It can be done, but it lofts so well it can be a struggle to get it all in there.  However, if this is a major selling point for you, I'd recommend giving up backpacking and spending your time playing pinochle.

The zipper rocks.  It's simple, effective, and doesn't easily snag.  It's also a double zipper so you can create a vent hole all along the side of the bag if you get too warm.  I never get too warm, though it's nice to know the option exists.  You can also unzip the entire bag and use it as a quilt, though at 3 lbs, that is one seriously heavy quilt.

This is a new product so I can't really comment on durability, though the bag seems very well constructed.

It's cheap.  For an 800 fill -10 degree rated bag, $400 is a steal.

I've used this bag during winter/spring 2013 in the Colorado mountains.  I like it so much I have taken to standing on my front lawn, holding it in the air and cheering/screaming "wahoo!" at passing motorists.

Where to Buy

Help support this site by making your next gear purchase through one of the links above. Click a link, buy what you need, and the seller will contribute a portion of the purchase price to support Trailspace's independent gear reviews.
previously retailed for:

The GoLite Z -10 Four-Season is not available from the stores we monitor. It was last seen July 8, 2014 at

Recently on Trailspace

Six Moon Designs Minimalist Review

Helle Trofé Review

Tilley LTM2 Airflow Hat Review

Big Agnes Fly Creek HV UL1 Review

Name this pack!

Big Agnes Fly Creek HV UL1 Review