About the author

Tim Moss

Tim Moss has supported over 100 expeditions across all seven continents. He has climbed new mountains, crossed a desert on foot and recently cycled 13,000 miles around the world. He is a Fellow of the Royal Geographical Society London and a Guinness World Record Holder. He aims to encourage more people to live adventurously. Read more...


  1. 1


    You haven’t mentioned Cumulus sleeping bags. They do incredible value, very high quality down bags. I’ve used their lightweight bags throughout Africa, North and Central America and Asia and a much thicker one in Siberia. I would highly recommend their products…

    1. 1.1

      Tim Moss

      Thanks for the heads up Helen. They look great. It’ll take me a while to compile all the information and update the article but I’ll give you a shout when I do.

  2. 2

    alex daly

    I would say when looking at ultralight, and that we all use decent sleeping mats these days, I have found a quilt to be the future. half the weight, as all the down you sleep on is crushed anyway. Something from the hammock market is ideal, my Enlightened Equipment quilt is good down to -10 and only comes in at 450g

  3. 3

    Tom Fearnehough

    Worth checking aliexpress for some of the bags by Aegismax – they do a down bag 230g 800 down 408g total rating 2 – 8c – costs £38! I bought one – really pleased with it – great loft and compression.

    1. 3.1

      Tim Moss

      Thanks for the tip off Tom.

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  5. 4


    I purchased a Plasma 15 a few years back. Got in it and almost ripped the zipper off trying to get back out. I felt like I was trapped inside a coffin 6 feet under. I am a side sleeper, I toss and turn, wife says I snore (which I don’t believe ;)
    I know I have sleep apnea and can’t wear a C-pap for the same reasons I couldn’t sleep in something like the Plasma, severe claustrophobia. Anyone reading this have similar problems with confining mummy bags? Any suggestions for a decent winter bag that will keep me warm without feeling trapped ? Thanks to any and all for any feedback!

    Special THANK YOU ! to Tim Moss for this site! Not sure if this is the place to mention it but after reading Mr. Moss’s stove reviews I have a Optimus Polaris on the way yo my crib. Can’t wait to try that Bad Boy out!

    1. 4.1

      Tim Moss

      Hey John,

      Thanks for the comment although I’m sorry to hear about your bad experience with the Plasma. Mountain Equipment used to make a great comfortable/roomy range of sleeping bags called ‘Dreamcatcher’. They weren’t quite as restrictive and had a stretchy middle so you could put your knees. I don’t know any others off the top of my head although you might consider a rectangular bag and avoiding ultralight options like these ones will probably help too.

      Glad you liked the stove reviews too. Enjoy the Polaris!



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