The Autumn Field Jacket builds its shell from Canopy 2L, a 50D polyester face fabric backed by a 10K waterproof and 10K breathability rating with critically taped seams. Mesh-lined underarm vents pull heat straight from the body's hottest zone during a hard climb, working differently than a chest vent by clearing heat before it ever reaches the torso. Two billowed chest pockets add real capacity up front, giving a rider a place to stash gloves or a layer without digging into a pack. What Our Gearhead(R) Experts Are Saying:"I stuff a midlayer into one billowed chest pocket and my liner gloves into the other, and neither one gets in the way of my zipper pulls. The vents under my arms do the rest of the work once I'm moving."