okay, I'll keep that in mind when I go in tomorrow.

Albert, Yes traditional compression sacks have four straps that pull down on the bag and compress the contents. I have found the roll top Sea to Summit and OR bags to be every bit as much of a compression sack without the bulk of a traditional compression sack. There is certainly a technique to it but if done properly it will compress quite a bit (assuming the item you stuff inside compress well) with the added benefits of being very lightweight and watertight.

For this to work well you need to stuff in the contents, press down on the contents (I like to fold over the top of the bag), then roll down the top. If done right the bag has a tendency to not let air bag in. After a roll or two no more air will get as a seal has been made.

I guess I need to make a video of the process next week when I start loading up for our trip over Memorial Day weekend.

I can see what you're saying. Two ways of doing the same thing. I ended up going with the Granite Gear Rock Solid compression sack. It weighs less, costs less, and has the life time guarantee its Sea to Summit compression sack [with the 4 straps] counterpart lacked.

Sewing machines allows DIY.. a stuff sack with 2 strips of webbing sewn lengthwise ..
with grommets , would allow a non traditional compression in diameter rather than shortening.

think of how you tie your shoes on your feet. may pack better..

its not that tough , children run sewing machines all over the world. :rolleyes:

Ah I think we might be talking about apples and oranges. I have been talking about this Sea to Summit Silnylon bag: http://www.rei.com/product/777725/se...a-sil-dry-sack

http://www.seatosummit.com/images/products/usdry.jpg

Does this change the discussion at all? Maybe not seeing as you got a product you like. :)