Cumulus Quilt 350

Discussion in 'Sleeping Bags & Quilts' started by Dave V, Mar 7, 2018.

  1. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    I have the Kiuiu Peleton Fleece in Toray fabric, excellent stuff.
  2. island

    island Summit Camper

    Hi, I was looking at a Quilt 450 (for the Pyrenees in September) but long/wide (15cm longer/10cm wider). I am 188cm tall (6'2").
    Cumulus gave me this info:

    Quilt 450
    Standard : 710g total // 450g fill // max user height 185cm
    Long/Wide : 810g total // 520g fill // max user height 200cm

    I thought about it and I'm a pretty warm sleeper and will have a hooded puffy for the occasional chilly nights.
    So... I thought, if the Quilt 350 is sized up to long/wide it might be something like this:

    Quilt 350
    Standard : 600g total // 350g fill // max user height 185cm
    Long/Wide : 700g total // 450g fill // max user height 200cm (<- guessing all these as Cumulus have not answered).

    I kind of want to keep weight down but still be warm. I *think* 450g of fill in the Q350 L/W would be enough.... any advice?
    I think I would be cooking with 520g of fill in the Q450 L/W.

    Nunatak have a handy chart on their site and a similar 20F L/W quilt has 463g of fill.
  3. Daniel

    Daniel Trail Blazer

    the quilt 350 is true to temp rating
  4. ZenTrekker

    ZenTrekker Section Hiker

    Agree with that
    Daniel likes this.
  5. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    I may be misunderstanding what you are asking, but the fill weight 'effect' (rating) doesn't change as you increase the size. They just need more fill as the shell is bigger. Is that what you are wondering?
    The heavier quilt '350 L-W' would do the same job as the 'Regular 350'- so the Quilt 350 Long/Wide : 700g total // 450g fill // max user height 200cm should be good for (as Zentrekker and Daniel attest) the limit as a male for -4 or female 2 degrees.
    520 grams LW in the 450 will just give you the same rating as the 'regular 450'.
    FWIW Nunatak seem to set the benchmark for accurate down quantities.
    The question is will be -4 or so (should you be male) be what you want for that climate?
    Age also factors in too. Older people often sleep colder, as do females. Cheers
    Daniel and island like this.
  6. island

    island Summit Camper

    Thanks Lamont-Cranston, partly me being a bit dumb but also thrown a bit by the Nunatak fill for a similarly rated bag (520g vs 463g for same L/W).
  7. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    No worries. I go a bag under a couple of degrees. Look at the stunning weight and ratio of fill to down in some of some of those Cumulus bags!
  8. ZenTrekker

    ZenTrekker Section Hiker

    I have an excellent little book titled: The Secrets Of Warmth by Hal Weiss. In it he states a very simple formula "Thickness=Warmth". If you have the same amount of down fill in a larger bag, it will be less thick and not so warm.
  9. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    Isn't Island saying he will have 100 grams more down in the '350' model i.e 450 grams. Or did I misunderstand?
    Don't Cumulus state that is the appropriate equivalent fill to the 'regular length' 350?
    So the same quilt, same rating, but for a bigger user?
  10. Bob-W

    Bob-W Trail Blazer

    Without applying some formula or other you can only really compare fill weights if the down is the same fill power (using the same scale, either standard or US) and quality. So if both bags are the same size and have 800fp 95/5 quality down then that's fine. If one has 700fp and one 800fp then things become a little tricky.

    There's two "standards" for fill power, US and EN, with the US figure being roughly 50 higher than the EN value for the same down sample so US 850fp = EN 800fp (roughly). This means that a bag/quilt with 450g of 800fp (US) won't be as warm as a bag/quilt with 450g of 800fp (EN) all other factors being equal.

    The bag also needs the cells holding the down to be big enough for the down to fully loft but not too big that it can move around. If you look at the details on Cumulus' site for their quilts they give both weight of down and of the shell - the latter increases ever so slightly, by about 20g, as more down is added to allow for the increased loft.

    If Cumulus have calculated that an extra 70g of down is required for the long/wide version to have the same rating then I'd be inclined to believe them.
    Daniel likes this.
  11. island

    island Summit Camper

    Yes, I just need to work out if I want to buy a Quilt 350 or 450 (in my size). GF is def getting a 450.
  12. Enzo

    Enzo Thru Hiker

    I think there is a point,different for everyone when as you add more down for a lower rating you reach the point where a bag makes more sense. For me it's between 350 and 450g of 850eu. For me I'd go 350 and anything much bellow freezing I'd bring a decent warm jacket to boost the quilt. Less than -5 or 6 I think I'd use a bag/over bag.
    island likes this.
  13. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    What temp 'comfy' do you want?
    How cold are the 'normal' lows (not the average!) you would expect in the Pyrenees at the time you are going-September?
    Have you studied the meteorological historical temps-i.e lows.
    This is what I would definitely be doing, for what it's worth.
    island likes this.
  14. Tartanferret

    Tartanferret Thru Hiker

    And then some.... lime green to graphite, pic in front of window obviously


    And graphite to lime green, looks a funky camouflage lol


    @Lamont-Cranston i’ll weigh it for you shortly to see if you could shave a swig of water off your weight lol :)
    Lamont-Cranston likes this.
  15. Tartanferret

    Tartanferret Thru Hiker

    Actual coulour scheme..

    Lamont-Cranston likes this.
  16. Lamont-Cranston

    Lamont-Cranston Thru Hiker

    Nice colour scheme. Was that quicker than you expected?
  17. Tartanferret

    Tartanferret Thru Hiker

    I hinted I could do with it pretty sharpish for a forthcoming trip, and we met in the middle. Certainly no 6 weeks wait.
    Chiseller likes this.
  18. Tartanferret

    Tartanferret Thru Hiker


    Had a play with it this morning and a another weighing. Sorry for being cryptic but it is indeed only 15g lighter than standard. (The weight of the supplied stuff sack)

    I will try the silly straps out but I suspect they will be removed, giving the weight You and I were in the ballpark of expecting.

    I really like the fabric, traps air like nothing else I own. Putting it in a stuff sack is like trying to push a balloon through a letterbox lol.

    Airtastic? it truly is :thumbsup:

    Living in this country, I can’t imagine buying a 150 quilt but if I did, i’d go with that fabric for sure.

    * off to research an ultralight underquilt project now, another ker-ching spend that I don’t NEED
    jack4allfriends and FOX160 like this.
  19. jack4allfriends

    jack4allfriends Backpacker

    I think there weight per webpage are without straps. I want to get Taiga 360 in Airtastic bc I don't like open footbox & they told me it's 40gr lighter than standard.
    Last edited: May 12, 2019
    Tartanferret likes this.
  20. Tartanferret

    Tartanferret Thru Hiker

    For hammocking?
  21. Balagan

    Balagan Thru Hiker

    Except for some vertical baffles, the Taiga is exactly the same as the old (narrow) version of the Quilt.
    Last edited: May 13, 2019
    jack4allfriends and Daniel like this.
  22. jack4allfriends

    jack4allfriends Backpacker

    Nope. I stay on the ground, mostly.. It seems narrow on the pics but width is the same by specs (Taiga is 2cm wider).

    I feel like Taiga is better choice from Cumulus offerings bc of close footbox, especially in higher weight/ more 3 season options. I'm side sleeper & vertical baffles should be better match. Just not sure about Taiga's differential cut, probably designed for hammock pressing on baffles from the outside. Don't know, should ask.
  23. Muiriosa

    Muiriosa Hiker

    Hi folks, first poster here! I am a (very!) new backpacker from Ireland. I'm hoping to add gradually to my kit over the next year.

    I don't want to spend crazy money in case I don't keep up the hiking but I also don't want to buy something I'll have to upgrade in 6 months time!

    I've been looking at cumulus quilts and/or bags but I'm concerned about the down in my wet climate. Should I just splurge for a synthetic quilt? I'm currently using a snugpak travel pak 2!
  24. ZenTrekker

    ZenTrekker Section Hiker

    FWIW & only a personal view, I don't think its that difficult to keep a down quilt/bag dry, you just have to be careful. I also think its a fallacy that synthetic bags are warmer when wet, nothing is warmer when wet, in my experience.

    One way a down bag can get wet is from sensible (& insensible) perspiration). If you have a bag that is over-specced and you overheat, your bag will get wet (from the inside). This is where a quilt scores because you can vent it more easily.
    Charlie83 and jack4allfriends like this.
  25. qy_

    qy_ Summit Camper

    I think the Taiga might be less wide over the torso even though it has the same with at the top. Anyway, I have one and it´s perfect for hammock but to narrow for me as a side sleeper to use sleeping on the ground. For a back sleeper it might be just workable but I would want something wider even if I always slept on the back. Cumulus can add width to their quilts but you have to email them about it, there is no configurator on their web site. It is the width that is the problem, I don´t think you have to worry about the buffles.
    jack4allfriends likes this.

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