Weigh less than half what snap-lock bags do (and beat everything else hands down), eg a camera pouch weighs 1.6 grams! Given that you need to sort your pack gear some way, you probably have a dozen or more bags which could be replaced with these beauties – probably saving you the equivalent of ½ to a day’s food (or three days’ booze if you drink Bacardi 151 when hiking!) You can buy them here: http://www.zpacks.com/accessories/stuff_sacks.shtml or you can make your own having bought the material (and patterns eg) here: http://www.questoutfitters.com/ You don’t need to be able to sew – you can make them just with cuben fibre and cuben tape and of course some 1 mm dyneema and micro cord locks.
http://www.theultralighthiker.com/cuben-tape/
