I bought this material to make pocket bags for all my riding buddies to store their tools and bike fix kits (tubes, CO2 cartridges, patches, etc). The waterproof fabric is nice and stiff and easy to sew,and keeps tools from rusting from all our sweat. It seems to clean up ok too - I got some greasy hands on mine but it came off with a little dish soap and elbow grease. I am unsure of the recommended care instructions for this type of fabric but that seemed to do the trick. I recommend darker colors if you are going to be handling this with sweaty or greasy fingers on the regular.
Needed a zippered top pocket for my pack. Used XPac, sews well, easy to use. Now time to find more projects.
Great weight for a backpack, strong, gets softer with use, waterproof and easy to sew on.