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Sleeping Gear The Sleeping Gear forum is for the discussion of sleeping gear (bags, mats, quilts...).

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Old 08-11-2011, 03:27 AM
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jclick jclick is offline
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Join Date: Apr 2011
Posts: 2
What size compression sack for a Sierra Designs Verde 40?

I bought a new Sierra Designs Verde 40, and it didn't come with a compression sack so I'm looking to get one. My question is the stuff size dimensions. Is that the dimensions for the sleeping back at it's smallest compression or is the dimensions the size bag I need to get? I of course want to compress it as small as possible to save space but I don't want to have a wrestling match every time I pack it up.

Stuffed diameter: 7" / 18 cm
Stuffed length: 17" / 43 cm

I was looking at some compression sacks. One had the following dimensions:

Dimensions: [S] 7 x 16in (18 x 41cm); [M] 9 x 20in (23 x 51cm); [L] 11 x 23in (28 x 58cm); [XL] 12 x 26in (30 x 66cm)

ALPS Mountaineering Compression Sack

Thanks for the help!
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Old 08-13-2011, 12:26 AM
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Bushwalker Bushwalker is offline
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Join Date: Aug 2007
Location: New South Wales
Posts: 275
I'm not sure you need a dedicated compression sac for this bag - unless you maybe want to be prepared to strap it on the outside of your pack...

One alternative: You can compress the bag into the bottom of your pack by first placing a garbage bag/bin liner into your empty pack, and then shoving your loose sleeping bag in there foot-first, and pushing it down tight to fill all the nooks and crannies. And then fold and twist the top of the garbage bag to seal it ~ some people will also pack a few of their spare clothes in there as well..

As for sizing a likely stuff sac: One thing you haven't told us is the size and shape of the backpack you want to shove this sleeping bag into. That 17" by 7" rolled size only gives you a starting point for working out its volume ~ and don't forget you need to convert the diameter of the bag into a circumference (muliply by pi = 3.142), and the width of the stuff sac is the just over half the circum.
However, you need to know how wide the inside of your pack is to fit the sleeping bag - all of my packs are under that 17" measurement, so I would be squishing that bag down to a shorter size..
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Old 08-13-2011, 10:01 PM
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GGervin GGervin is offline
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Backpack: Gregory Shasta, Deuter ACT Lite 65+10
Sleeping Gear: REI ThermoPod +0 mummy, MH 3D +40 mummy
Shelter: SD Superflash, GoLite Hut 1
Join Date: Jun 2010
Location: California
Posts: 436
I agree that you may not need a compression sack. I've used 'em before (especially for my bulky but warm 0 degree bag), and in the long run I've been worried about prematurely destroying the loft by using a compression sack.

If you're really going to go with a compression sack, be aware there are two kinds: one compresses veritcally so the barrel shaped sack gets shorter as you compress it, and the other type compresses around the circumference of the barrel shape so it becomes skinnier instead of shorter. Like Bushwalker says, think about what works for your pack and decide on the right stuff sack from there.

But the way I'd really recommend is to buy the smallest, lightest, most waterproof non-compression stuff sack you can stuff the bag into easily. I've found I can quickly and easily stuff my 40 degree bag into a fairly small stuff sack that takes minimal room in the pack but isn't quite as harsh on loft as a compression sack.

I'm lucky. I have several good backpacking suppliers within easy driving distance. I took the bag in with me and then saw what fits best. That advice may be harder to implement if mail-order is your only option. Check the volume of the stuffsack that came with the bag, and think about how fluffy the bag is when it's in the sack. Then squeeze the bag/sack combo down to see how small you think you want it to go and maybe use a clothing tape measure to figure smallest practical volume and dimensions. Use that to estimate how much smaller a sack you could mail order.
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Old 08-18-2011, 04:35 AM
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Ralph Ralph is offline
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I use three types of compression sack for squishables. The telecompressor (Granite gear) compressing vertically and the Kifaru compressing horizontally. What I do not do is compress these down to a solid brick. The third type is the plastic "Space Bag" with the one-way valve on one end. The "Space Bag" is compressed down as tight as possible but is used exclusively for spare socks, underwear and, sometimes, fleece or wool sweaters and such. These bags are also watertight. The clothing set I carry in the truck packed in SteriLite containers is packed in various sizes of space bag.

I select the telecompressor bag about 1" or so larger in diameter than the thickness of the pack bottom them compress just enough to fit snugly into the bottom of the pack.

The Kifaru sacks come in two lengths, 12" and 16" and various diameters. I select the length appropriate for the pack - 12" fits most day packs, 16" most full-size packs - then compress the diameter to fit snugly in the bottom.

I find packs pack and ride better if softer things are left slightly soft to lock together rather than trying to pack a bunch of hard little bricks. I also don't compress the overall pack tightly, just snug enough to keep everything in place.

Moderate compression does not seem deleterious to insulation. I store down and synthetic gear either hanging (clothing) or folded loosely into SteriLite containers.

Last edited by Ralph : 08-18-2011 at 04:41 AM.
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