210d HDPE Gridstop Bodyside Panel - 14"
This is the panel that rides against the body and wraps down to the bottom of the pack.
Composition - 210d Nylon Ripstop with an HDPE Grid, PU Coated Interior
If durability is your main concern, go with 210d HDPE Gridstop. A classic fabric in the ultralight community, 210d HDPE Gridstop has stood the test of time and has the potential to last many thousands of trail miles. The PU coated interior makes the fabric waterproof, but the nylon fibers will absorb moisture. This means exposure to wet conditions will add weight to your pack and cause the fabric to sag.