I've been looking but can't seem to locate a distributor of two of the fabrics shown on the backpack in the picture below. One is the stretchy material used on the side pockets. This stuff feels similar to lycra but thinner, more sturdy, and less porous. The other is the blue material underneath the side pockets. It is some kind of ripstop fabric with a very small grid. Appears to be the same stuff used by Granite Gear on their Vapor Trail packs. Anyone know where I can purchase either of these by the yard?