Review – Lifeventure Downlight 900 sleeping bag – First thoughts

Posted by @ 8:23 pm on Saturday 4th June, 2011.
Categories: My reviews, Shiny new kit

This item has been supplied by Adam Smith, representing Go Outdoors.

The sleeping bag being reviewed is the Lifeventure Downlight 900, the Go Outdoors link is here and the Lifeventure link is here.

The first thing to report is what this item's like straight out of the packaging... it's different. There's no traditional strappy compression sack, instead there's a drybag with a roll-top closure and an air-valve air-vent and stopper. The bag has welded seams and the fabric appears to be quite durable with a woven outer face and a coated inner face. Once filled, the drybag is as airtight as any other roll-top drybag - I sat on it and it didn't squeak or leak. I'm not ready to do an immersion-test on it just yet though. When I removed the stopper it was easy to expel the excess air and the contents compressed well to form a shape that would easily slip into a pack, or into a larger mesh pocket on the outside of a pack. When stuffed with clothing the drybag makes a useful pillow which fits neatly in or under the hood of the sleeping bag.


After taking out the sleeping bag and giving it a shake and a rest to allow the fill to loft, I stuck it on the lawn and took a few pics. My observations from this, and a few other notes, are listed below.



For the full spec I'd advise going to the Lifeventure site, but here are some of my observations:


  • The head-end is not cowled but it's still a nice fit around the face with the elasticated drawcord. There's also a down-filled neck-baffle with a non-stretch drawcord. Both drawcords have captive cord-grips on the side opposite to the main zip.
  • There is a small (about 5" x 4") zipped pocket on the outside and two Velcro-closed internal pockets (about 4.5" x 4.5") on the inside - one near the chest, one near the ankle.
  • The 2-way main zip is unbranded but seems to be the same as the YKK zips in my other sleeping bags. The zip opens 3/4 of the way across the foot end which allows for the user to sleep with feet out of the end (rather than out of the end of the side). It also allows the sleeping bag to be opened fully for use as a blanket. The zip has a corded pull-tag on the top puller and there is a Velcro-closed puller cover at the top end of the zip. The full-length down-filled zip-baffle has a woven anti-snag strip.
  • The foot is oval, allowing the user's feet to fit without restriction (but if you've got absolutely huge feet, YMMV).
  • There are two pairs of hanging-loops at the foot end - one pair inside, one pair outside.
  • It has single-layer box-wall construction with a lightweight ripstop outer and a Tactel nylon and micro polyester inner. The stitchwork is good - I've found no bad bits and no loose ends.
  • The outer fabric has "Ex3" treatment - see the Lifeventure website for details of this.
  • The fill is "high quality duck down", I've yet to find a proper fill-power figure in the blurb but the swing-tag says that there is 300g of the stuff in there.
  • The claimed length and widths are about right.
  • The claimed weight is 900g, I measured this one and found that the sleeping bag weighs 970g, the drybag adds another 110g. It's worth noting that with the drybag, unlike when using a standard compression bag, no additional waterproof outer bag is required.
  • The claimed "packed size" is obviously dictated by the drybag length and width, I managed to compress the filled drybag to an average thickness of 3cm with ease. I'll try the sleeping bag in a standard compression bag sometime soon and report back with the critical measurements.
  • Compared to other "mummy-shaped" sleeping bags this one has more width in the leg area, this makes it quite easy for the user to move around inside it.

All things considered, this looks like a nice bit of gear and I hope it performs as well as it looks. I was tempted to set up a tent in the garden so I can give this kit a night out, but I've been told that I'm too busy this weekend. Next week, maybe?


UPDATE (7th June, 2011):

I knew that there was something bugging me about what I'd claimed to be an air-valve on the drybag. Eventually the penny dropped and I realised that it's not a valve at all - there's no diaphragm in there. What I looked at and thought was a diaphragm is actually an internal baffle-plate to prevent the fabric of the bag from being pushed through the hole during compression - think of the cargo-hold window scene at the end of Alien Resurrection and you'll get my drift. Without the stopper in the hole, air can flow in or out depending on the pressure-difference. I'm sorry for any confusion caused by my error.


UPDATE (20th June, 2011):

Incoming information provided by Andy Howard (Product Designer, Lifemarque Limited)...
Please find some spec. details for the Downlight 900 that you are interested in:
Shell fabric: 300T nylon diamond ripstop and 290T nylon 6 corner ripstop
Lining fabric: 300T nylon diamond ripstop
Filling: 80% grey duck down, fill weight: 300g, fill power: 500g/m2

Related Posts Plugin for WordPress, Blogger...

9 Responses to “Review – Lifeventure Downlight 900 sleeping bag – First thoughts”

  1. alan.sloman says:

    I do like their drybag with the air valve - a great idea.

    It looks like a good bag - I also like the look of unzipping the foot end - great on a warm night.
    Interesting bag. It would be interesting to find out the fill power of the down, Stef.

  2. BG! says:

    Originally Posted By alan.sloman
    I do like their drybag with the air valve - a great idea.

    Yeah, I'm hoping that my Alpkit AD700 will fit in there. I'll go have a bash at it sometime soon.
    I'll report back with the fill-power figure as soon as I get the info.

  3. Adam says:

    @Alan: I can send out another to review if you'd like one?

  4. BG! says:

    Heads up!

    I've had to make a small revision to the description of the drybag - details at the end of the post.

    My bad.


  5. alan.sloman says:


    That nice Adam is sending me some gear to test too!

    Drum roll........ Excitement mounting.......:lol:

  6. BG! says:

    Don't be shy - spill the dehydrated beans, Alan :mrgreen:

  7. alan.sloman says:

    Aha That's between Adam & me until the review!

    I might put a few clues up though later...8)

  8. Mike Bell says:

    Looks good Stef.
    A lightweight bag is always handy and if its really warm just use it as a quilt.

  9. BG! says:

    Another heads up!

    Further info added - details at the end of the post.

Have your say - submit a comment

THE SMALL(ish) PRINT... (updated 23/07/2016)

By submitting a comment to this blog you grant me permission to reproduce its content and to reproduce the submitted name/URL in attribution. I will leave your content in its intended place and in its unedited form unless one or more of the following apply:

If you ask me to modify, move or delete your content, I’ll consider making the requested change(s) so long as there’s no significant alteration of the context of the content or of any debate associated with it;
If you change your email address or URL, I’ll update these details in older comments so that I'm not displaying dead links;
If I decide to change the theme or layout of this blog, thus affecting the placement and/or visibility of comments, I’ll make whatever changes I see fit for the smooth running of this blog;
If any comment contains insulting profanity or other content which I deem to be causing or likely to cause trouble, I’ll edit or delete as I see fit for the smooth running of this blog. I’ll try to remember to display the reason(s) for whatever editing I do, so that folk aren’t left hanging wondering what happened and why. If you can at least try to "disguise" your swearing, it would be much appreciated.

Other things to consider:

Comments must contain at least 3 characters;
You can use some code in comments, feel free to give it a shot and see what works;
If adding pics, the recommended maximum dimension is 600px.;
Comments containing many links will be held for moderation;
I reserve the right to amend this policy in line with proven applicable current legislation;
Free Speech: you may well have the right to it, but you've no right to compel me to a) listen to it, or b) publish it!