Yeah, they'll work for clothes. Depends on what type of clothes you have for sizing. If it is mostly down and highly compressible stuff then you might be able to get away with a medium, otherwise go with the large.

Oh man are they ever great for clothes! Depending on how you're going to load your pack, you can compress it down into a tight bundle, or just use it to keep everything together, but still stuff the nooks and crannies. For what you need, I would go with the large. These comp sacks are fantastic. You'll be hooked the first time you use it.

To add to that, the material used in the Granite Gear Round Rock Solid Compression Sacks is waterproof (PU coating), but the seams are not. They are taped (not the same taping as in a waterproof jacket) which helps them from fraying and allows them to be more water resistant. However with prolonged water exposure, the seams will draw in moisture.

Granite Gear does offer a more waterproof compression sack that is fully seam taped (waterproof taping). These are the Granite Gear EVent Compression Dry Sacks. These are significantly more waterproof and feature a roll-down closure, eVent material on the bottom of the sack to allow for purging of the air, and every seam is taped for maximum waterproofness. I would recommend using these if going on a trip that will likely involve large amounts of water exposure.

I wouldn't recommend using them for a canoeing or rafting trip down the river like a dry sack, but they will work fine in any other damp or humid environments. They are water resistant not waterproof.

Do you really need a gear head to answer this??? If a Medium is too small; get the next size bigger!

If the medium doesn't work, try using a large. This will also give you a bit of extra room for compressing a few other items.

Just adding to what's been previously stated, the type of sleeping bag you currently have dictates what size compression stuff sack you will need. Use the stuff sack that came with your bag as a guide.

That will depend entirely on the size and type of your sleeping bag. I would use the following guidelines.

Medium (16L): Synthetic mummy bag rated from 15 to 25 degrees. Down mummy bag rated around 0 degrees.

Small (11L) : Synthetic 40 degree bags, Down 15 to 25 degree bags.

Large: Synthetic 0 degree mummy bags;

**Note, This should help get you into the right range, but remember things like whether you have the short, regular, or long version of your bag will also play into the equation. I have both a small and medium version of this compression sack and they have been able to cover all of my needs thus far. Remember Back country has a great return policy if you end up having to re-order.

You can use the XS or the Small. I use the XS for my Big Agnes Seedhouse SL2 and it's an easy fit. Ends up a bit bigger than a 1L Nalgene bottle on the height, and maybe twice diameter or so.

Absolutely. I frequently compression sacks for both down and synthetic bags and I am always amazed how much smaller they pack compared to their standard stuffed or rolled up size.

Yes, it'll make it smaller. Pretty much makes anything fabric smaller. Hope this helps!

Assorted colors.

Pick what size you want, and BackCountry will provide you that size in an unknown color.